diff --git a/src/wp-admin/css/admin-menu.css b/src/wp-admin/css/admin-menu.css
index c4b32ac4b9e87..5afb5facff698 100644
--- a/src/wp-admin/css/admin-menu.css
+++ b/src/wp-admin/css/admin-menu.css
@@ -288,6 +288,19 @@
 	background-size: 20px auto;
 }
 
+#adminmenu div.wp-menu-image.svg-icon {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+}
+
+#adminmenu div.wp-menu-image.svg-icon svg {
+	width: 22px;
+	height: 22px;
+	fill: currentColor;
+	transition: color .1s ease-in-out;
+}
+
 div.wp-menu-image:before {
 	color: #a7aaad;
 	color: rgba(240, 246, 252, 0.6);
@@ -295,24 +308,35 @@ div.wp-menu-image:before {
 	transition: all .1s ease-in-out;
 }
 
-#adminmenu div.wp-menu-image:before {
+#adminmenu div.wp-menu-image:before,
+#adminmenu div.wp-menu-image.svg-icon svg {
 	color: #a7aaad;
 	color: rgba(240, 246, 252, 0.6);
 }
 
 #adminmenu li.wp-has-current-submenu:hover div.wp-menu-image:before,
+#adminmenu li.wp-has-current-submenu:hover div.wp-menu-image.svg-icon svg,
 #adminmenu .wp-has-current-submenu div.wp-menu-image:before,
+#adminmenu .wp-has-current-submenu div.wp-menu-image.svg-icon svg,
 #adminmenu .current div.wp-menu-image:before,
+#adminmenu .current div.wp-menu-image.svg-icon svg,
 #adminmenu a.wp-has-current-submenu:hover div.wp-menu-image:before,
+#adminmenu a.wp-has-current-submenu:hover div.wp-menu-image.svg-icon svg,
 #adminmenu a.current:hover div.wp-menu-image:before,
+#adminmenu a.current:hover div.wp-menu-image.svg-icon svg,
 #adminmenu li.wp-has-current-submenu a:focus div.wp-menu-image:before,
-#adminmenu li.wp-has-current-submenu.opensub div.wp-menu-image:before {
+#adminmenu li.wp-has-current-submenu a:focus div.wp-menu-image.svg-icon svg,
+#adminmenu li.wp-has-current-submenu.opensub div.wp-menu-image:before,
+#adminmenu li.wp-has-current-submenu.opensub div.wp-menu-image.svg-icon svg {
 	color: #fff;
 }
 
 #adminmenu li:hover div.wp-menu-image:before,
+#adminmenu li:hover div.wp-menu-image.svg-icon svg,
 #adminmenu li a:focus div.wp-menu-image:before,
-#adminmenu li.opensub div.wp-menu-image:before {
+#adminmenu li a:focus div.wp-menu-image.svg-icon svg,
+#adminmenu li.opensub div.wp-menu-image:before,
+#adminmenu li.opensub div.wp-menu-image.svg-icon svg {
 	color: #72aee6;
 }
 
@@ -323,6 +347,10 @@ div.wp-menu-image:before {
 	z-index: 25;
 }
 
+.folded #adminmenu div.wp-menu-image.svg-icon {
+	height: 34px;
+}
+
 .folded #adminmenu a.menu-top {
 	height: 34px;
 }
@@ -493,6 +521,9 @@ ul#adminmenu > li.current > a.current:after {
 #collapse-button .collapse-button-icon {
 	width: 36px;
 	height: 34px;
+	display: flex;
+	align-items: center;
+	justify-content: center;
 }
 
 #collapse-button .collapse-button-label {
@@ -503,29 +534,25 @@ ul#adminmenu > li.current > a.current:after {
 	display: none;
 }
 
-#collapse-button .collapse-button-icon:after {
-	content: "\f148";
-	content: "\f148" / '';
-	display: block;
+#collapse-button .collapse-button-icon svg {
+	width: 22px;
+	height: 22px;
+	fill: currentColor;
 	position: relative;
-	top: 7px;
-	text-align: center;
-	font: normal 20px/1 dashicons !important;
-	-webkit-font-smoothing: antialiased;
-	-moz-osx-font-smoothing: grayscale;
+	top: -1px;
 }
 
 /* rtl:ignore */
-.folded #collapse-button .collapse-button-icon:after,
-.rtl #collapse-button .collapse-button-icon:after {
+.folded #collapse-button .collapse-button-icon svg,
+.rtl #collapse-button .collapse-button-icon svg {
 	transform: rotate(180deg);
 }
 
-.rtl.folded #collapse-button .collapse-button-icon:after {
+.rtl.folded #collapse-button .collapse-button-icon svg {
 	transform: none;
 }
 
-#collapse-button .collapse-button-icon:after,
+#collapse-button .collapse-button-icon svg,
 #collapse-button .collapse-button-label {
 	transition: all .1s ease-in-out;
 }
@@ -609,6 +636,10 @@ li#wp-admin-bar-menu-toggle {
 		z-index: 25;
 	}
 
+	.auto-fold #adminmenu div.wp-menu-image.svg-icon {
+		height: 34px;
+	}
+
 	.auto-fold #adminmenu a.menu-top {
 		min-height: 34px;
 	}
@@ -650,11 +681,11 @@ li#wp-admin-bar-menu-toggle {
 	}
 
 	/* rtl:ignore */
-	.auto-fold #collapse-button .collapse-button-icon:after {
+	.auto-fold #collapse-button .collapse-button-icon svg {
 		transform: rotate(180deg);
 	}
 
-	.rtl.auto-fold #collapse-button .collapse-button-icon:after {
+	.rtl.auto-fold #collapse-button .collapse-button-icon svg {
 		transform: none;
 	}
 
@@ -814,26 +845,25 @@ li#wp-admin-bar-menu-toggle {
 		border: 1px solid transparent;
 	}
 
-	#wpadminbar #wp-admin-bar-menu-toggle .ab-icon:before {
-		content: "\f228";
-		display: inline-block;
+	#wpadminbar #wp-admin-bar-menu-toggle .ab-icon {
+		display: flex;
+		align-items: center;
+		justify-content: center;
 		float: left;
-		font: normal 40px/45px dashicons;
-		vertical-align: middle;
-		outline: none;
 		margin: 0;
-		-webkit-font-smoothing: antialiased;
-		-moz-osx-font-smoothing: grayscale;
 		height: 44px;
 		width: 50px;
 		padding: 0;
 		border: none;
-		text-align: center;
-		text-decoration: none;
 		box-sizing: border-box;
 	}
 
-	.wp-responsive-open #wpadminbar #wp-admin-bar-menu-toggle .ab-icon:before {
+	#wpadminbar #wp-admin-bar-menu-toggle .ab-icon svg {
+		width: 36px;
+		height: 36px;
+	}
+
+	.wp-responsive-open #wpadminbar #wp-admin-bar-menu-toggle .ab-icon {
 		color: #72aee6;
 	}
 }
diff --git a/src/wp-admin/css/colors/_admin.scss b/src/wp-admin/css/colors/_admin.scss
index 313666e3ded73..1b5812bb21a9d 100644
--- a/src/wp-admin/css/colors/_admin.scss
+++ b/src/wp-admin/css/colors/_admin.scss
@@ -259,7 +259,8 @@ input[type="radio"]:focus {
 	color: variables.$menu-text;
 }
 
-#adminmenu div.wp-menu-image:before {
+#adminmenu div.wp-menu-image:before,
+#adminmenu div.wp-menu-image.svg-icon svg {
 	color: variables.$menu-icon;
 }
 
@@ -272,7 +273,9 @@ input[type="radio"]:focus {
 }
 
 #adminmenu li.menu-top:hover div.wp-menu-image:before,
-#adminmenu li.opensub > a.menu-top div.wp-menu-image:before {
+#adminmenu li.menu-top:hover div.wp-menu-image.svg-icon svg,
+#adminmenu li.opensub > a.menu-top div.wp-menu-image:before,
+#adminmenu li.opensub > a.menu-top div.wp-menu-image.svg-icon svg {
 	color: variables.$menu-highlight-icon;
 }
 
@@ -343,13 +346,21 @@ ul#adminmenu > li.current > a.current:after {
 }
 
 #adminmenu li.wp-has-current-submenu div.wp-menu-image:before,
+#adminmenu li.wp-has-current-submenu div.wp-menu-image.svg-icon svg,
 #adminmenu a.current:hover div.wp-menu-image:before,
+#adminmenu a.current:hover div.wp-menu-image.svg-icon svg,
 #adminmenu li.current div.wp-menu-image:before,
+#adminmenu li.current div.wp-menu-image.svg-icon svg,
 #adminmenu li.wp-has-current-submenu a:focus div.wp-menu-image:before,
+#adminmenu li.wp-has-current-submenu a:focus div.wp-menu-image.svg-icon svg,
 #adminmenu li.wp-has-current-submenu.opensub div.wp-menu-image:before,
+#adminmenu li.wp-has-current-submenu.opensub div.wp-menu-image.svg-icon svg,
 #adminmenu li:hover div.wp-menu-image:before,
+#adminmenu li:hover div.wp-menu-image.svg-icon svg,
 #adminmenu li a:focus div.wp-menu-image:before,
-#adminmenu li.opensub div.wp-menu-image:before {
+#adminmenu li a:focus div.wp-menu-image.svg-icon svg,
+#adminmenu li.opensub div.wp-menu-image:before,
+#adminmenu li.opensub div.wp-menu-image.svg-icon svg {
 	color: variables.$menu-current-icon;
 }
 
@@ -419,6 +430,7 @@ ul#adminmenu > li.current > a.current:after {
 	color: variables.$menu-submenu-focus-text;
 }
 
+#wpadminbar:not(.mobile) li:hover .ab-icon,
 #wpadminbar:not(.mobile) li:hover .ab-icon:before,
 #wpadminbar:not(.mobile) li:hover .ab-item:before,
 #wpadminbar:not(.mobile) li:hover .ab-item:after,
@@ -459,11 +471,15 @@ ul#adminmenu > li.current > a.current:after {
 #wpadminbar .quicklinks .menupop.hover ul li a:focus,
 #wpadminbar.nojs .quicklinks .menupop:hover ul li a:hover,
 #wpadminbar.nojs .quicklinks .menupop:hover ul li a:focus,
+#wpadminbar li:hover .ab-icon,
 #wpadminbar li:hover .ab-icon:before,
 #wpadminbar li:hover .ab-item:before,
+#wpadminbar li a:focus .ab-icon,
 #wpadminbar li a:focus .ab-icon:before,
 #wpadminbar li .ab-item:focus:before,
+#wpadminbar li .ab-item:focus .ab-icon,
 #wpadminbar li .ab-item:focus .ab-icon:before,
+#wpadminbar li.hover .ab-icon,
 #wpadminbar li.hover .ab-icon:before,
 #wpadminbar li.hover .ab-item:before,
 #wpadminbar li:hover #adminbarsearch:before,
@@ -475,11 +491,13 @@ ul#adminmenu > li.current > a.current:after {
 #wpadminbar .quicklinks li a:focus .blavatar,
 #wpadminbar .quicklinks .ab-sub-wrapper .menupop.hover > a .blavatar,
 #wpadminbar .menupop .menupop > .ab-item:hover:before,
+#wpadminbar.mobile .quicklinks .hover .ab-icon,
 #wpadminbar.mobile .quicklinks .hover .ab-icon:before,
 #wpadminbar.mobile .quicklinks .hover .ab-item:before {
 	color: variables.$menu-submenu-focus-text;
 }
 
+#wpadminbar.mobile .quicklinks .ab-icon,
 #wpadminbar.mobile .quicklinks .ab-icon:before,
 #wpadminbar.mobile .quicklinks .ab-item:before {
 	color: variables.$menu-icon;
diff --git a/src/wp-admin/includes/options.php b/src/wp-admin/includes/options.php
index 5742e3ccc1ccc..674237b3c9cee 100644
--- a/src/wp-admin/includes/options.php
+++ b/src/wp-admin/includes/options.php
@@ -36,6 +36,7 @@ function options_general_add_js() {
 <script>
 	jQuery( function($) {
 		var $siteName = $( '#wp-admin-bar-site-name' ).children( 'a' ).first(),
+			$siteNameIcon = $siteName.children( '.ab-icon' ),
 			$siteIconPreview = $('#site-icon-preview-site-title'),
 			homeURL = ( <?php echo wp_json_encode( get_home_url(), JSON_HEX_TAG | JSON_UNESCAPED_SLASHES ); ?> || '' ).replace( /^(https?:\/\/)?(www\.)?/, '' );
 
@@ -47,7 +48,7 @@ function options_general_add_js() {
 				title = title.substring( 0, 40 ) + '\u2026';
 			}
 
-			$siteName.text( title );
+			$siteName.text( title ).prepend( $siteNameIcon );
 			$siteIconPreview.text( title );
 		});
 
diff --git a/src/wp-admin/menu-header.php b/src/wp-admin/menu-header.php
index dcdf58d6391ce..1df5ba7b6bb4d 100644
--- a/src/wp-admin/menu-header.php
+++ b/src/wp-admin/menu-header.php
@@ -137,6 +137,14 @@ function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {
 				// The value is base64-encoded data, so esc_attr() is used here instead of esc_url().
 				$img_style = ' style="background-image:url(\'' . esc_attr( $item[6] ) . '\')"';
 				$img_class = ' svg';
+			} elseif ( str_starts_with( $item[6], 'core/' ) ) {
+				$icon = wp_get_icon( $item[6], array( 'size' => 22 ) );
+				if ( '' !== $icon ) {
+					$img       = $icon;
+					$img_class = ' svg-icon';
+				} else {
+					$img = '<br />';
+				}
 			} elseif ( str_starts_with( $item[6], 'dashicons-' ) ) {
 				$img       = '<br />';
 				$img_class = ' dashicons-before ' . sanitize_html_class( $item[6] );
@@ -283,7 +291,7 @@ function _wp_menu_output( $menu, $submenu, $submenu_as_parent = true ) {
 
 	echo '<li id="collapse-menu" class="hide-if-no-js">' .
 		'<button type="button" id="collapse-button" aria-label="' . esc_attr__( 'Collapse Main Menu' ) . '" aria-expanded="true">' .
-		'<span class="collapse-button-icon" aria-hidden="true"></span>' .
+		'<span class="collapse-button-icon" aria-hidden="true">' . wp_get_icon( 'core/chevron-left', array( 'size' => 22 ) ) . '</span>' .
 		'<span class="collapse-button-label">' . __( 'Collapse Menu' ) . '</span>' .
 		'</button></li>';
 }
diff --git a/src/wp-admin/menu.php b/src/wp-admin/menu.php
index 57d94c75e26f2..d034682e04273 100644
--- a/src/wp-admin/menu.php
+++ b/src/wp-admin/menu.php
@@ -26,7 +26,7 @@
  * @global array $menu
  */
 
-$menu[2] = array( __( 'Dashboard' ), 'read', 'index.php', '', 'menu-top menu-top-first menu-icon-dashboard', 'menu-dashboard', 'dashicons-dashboard' );
+$menu[2] = array( __( 'Dashboard' ), 'read', 'index.php', '', 'menu-top menu-top-first menu-icon-dashboard', 'menu-dashboard', 'core/dashboard' );
 
 $submenu['index.php'][0] = array( __( 'Home' ), 'read', 'index.php' );
 
@@ -70,7 +70,7 @@
 
 // $menu[5] = Posts.
 
-$menu[10] = array( __( 'Media' ), 'upload_files', 'upload.php', '', 'menu-top menu-icon-media', 'menu-media', 'dashicons-admin-media' );
+$menu[10] = array( __( 'Media' ), 'upload_files', 'upload.php', '', 'menu-top menu-icon-media', 'menu-media', 'core/media' );
 
 	$submenu['upload.php'][5]  = array( _x( 'Library', 'media library menu item' ), 'upload_files', 'upload.php' );
 	$submenu['upload.php'][10] = array( __( 'Add Media File' ), 'upload_files', 'media-new.php' );
@@ -86,7 +86,7 @@
 
 	unset( $taxonomy, $submenu_index );
 
-$menu[15] = array( __( 'Links' ), 'manage_links', 'link-manager.php', '', 'menu-top menu-icon-links', 'menu-links', 'dashicons-admin-links' );
+$menu[15] = array( __( 'Links' ), 'manage_links', 'link-manager.php', '', 'menu-top menu-icon-links', 'menu-links', 'core/link' );
 
 	$submenu['link-manager.php'][5]  = array( _x( 'All Links', 'admin menu' ), 'manage_links', 'link-manager.php' );
 	$submenu['link-manager.php'][10] = array( __( 'Add Link' ), 'manage_links', 'link-add.php' );
@@ -110,7 +110,7 @@
 		'',
 		'menu-top menu-icon-comments',
 		'menu-comments',
-		'dashicons-admin-comments',
+		'core/comment',
 	);
 
 	unset( $awaiting_moderation );
@@ -142,11 +142,12 @@
 		: ++$_wp_last_object_menu; // If we're to use $_wp_last_object_menu, increment it first.
 	$post_type_for_id        = sanitize_html_class( $post_type );
 
-	$menu_icon = 'dashicons-admin-post';
+	$menu_icon = 'core/post';
 	if ( is_string( $post_type_obj->menu_icon ) ) {
-		// Special handling for an empty div.wp-menu-image, data:image/svg+xml, and Dashicons.
+		// Special handling for an empty div.wp-menu-image, data:image/svg+xml, registered core icons, and Dashicons.
 		if ( 'none' === $post_type_obj->menu_icon || 'div' === $post_type_obj->menu_icon
 			|| str_starts_with( $post_type_obj->menu_icon, 'data:image/svg+xml;base64,' )
+			|| str_starts_with( $post_type_obj->menu_icon, 'core/' )
 			|| str_starts_with( $post_type_obj->menu_icon, 'dashicons-' )
 		) {
 			$menu_icon = $post_type_obj->menu_icon;
@@ -154,7 +155,7 @@
 			$menu_icon = esc_url( $post_type_obj->menu_icon );
 		}
 	} elseif ( in_array( $post_type, $builtin, true ) ) {
-		$menu_icon = 'dashicons-admin-' . $post_type;
+		$menu_icon = 'core/' . $post_type;
 	}
 
 	$menu_class = 'menu-top menu-icon-' . $post_type_for_id;
@@ -206,7 +207,7 @@
 
 $appearance_capability = current_user_can( 'switch_themes' ) ? 'switch_themes' : 'edit_theme_options';
 
-$menu[60] = array( __( 'Appearance' ), $appearance_capability, 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'dashicons-admin-appearance' );
+$menu[60] = array( __( 'Appearance' ), $appearance_capability, 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'core/brush' );
 
 $count = '';
 if ( ! is_multisite() && current_user_can( 'update_themes' ) ) {
@@ -320,7 +321,7 @@ function _add_plugin_file_editor_to_tools() {
 }
 
 /* translators: %s: Number of available plugin updates. */
-$menu[65] = array( sprintf( __( 'Plugins %s' ), $count ), 'activate_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'dashicons-admin-plugins' );
+$menu[65] = array( sprintf( __( 'Plugins %s' ), $count ), 'activate_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'core/plugins' );
 
 $submenu['plugins.php'][5] = array( __( 'Installed Plugins' ), 'activate_plugins', 'plugins.php' );
 
@@ -337,9 +338,9 @@ function _add_plugin_file_editor_to_tools() {
 unset( $update_data );
 
 if ( current_user_can( 'list_users' ) ) {
-	$menu[70] = array( __( 'Users' ), 'list_users', 'users.php', '', 'menu-top menu-icon-users', 'menu-users', 'dashicons-admin-users' );
+	$menu[70] = array( __( 'Users' ), 'list_users', 'users.php', '', 'menu-top menu-icon-users', 'menu-users', 'core/people' );
 } else {
-	$menu[70] = array( __( 'Profile' ), 'read', 'profile.php', '', 'menu-top menu-icon-users', 'menu-users', 'dashicons-admin-users' );
+	$menu[70] = array( __( 'Profile' ), 'read', 'profile.php', '', 'menu-top menu-icon-users', 'menu-users', 'core/people' );
 }
 
 if ( current_user_can( 'list_users' ) ) {
@@ -387,7 +388,7 @@ function _add_plugin_file_editor_to_tools() {
 	);
 }
 
-$menu[75]                     = array( __( 'Tools' ), 'edit_posts', 'tools.php', '', 'menu-top menu-icon-tools', 'menu-tools', 'dashicons-admin-tools' );
+$menu[75]                     = array( __( 'Tools' ), 'edit_posts', 'tools.php', '', 'menu-top menu-icon-tools', 'menu-tools', 'core/tool' );
 	$submenu['tools.php'][5]  = array( __( 'Available Tools' ), 'edit_posts', 'tools.php' );
 	$submenu['tools.php'][10] = array( __( 'Import' ), 'import', 'import.php' );
 	$submenu['tools.php'][15] = array( __( 'Export' ), 'export', 'export.php' );
@@ -402,7 +403,7 @@ function _add_plugin_file_editor_to_tools() {
 	$submenu['tools.php'][50] = array( __( 'Network Setup' ), 'setup_network', 'network.php' );
 }
 
-$menu[80]                               = array( __( 'Settings' ), 'manage_options', 'options-general.php', '', 'menu-top menu-icon-settings', 'menu-settings', 'dashicons-admin-settings' );
+$menu[80]                               = array( __( 'Settings' ), 'manage_options', 'options-general.php', '', 'menu-top menu-icon-settings', 'menu-settings', 'core/settings' );
 	$submenu['options-general.php'][10] = array( _x( 'General', 'settings screen' ), 'manage_options', 'options-general.php' );
 	$submenu['options-general.php'][12] = array( __( 'Connectors' ), 'manage_options', 'options-connectors.php' );
 	$submenu['options-general.php'][15] = array( __( 'Writing' ), 'manage_options', 'options-writing.php' );
diff --git a/src/wp-admin/network/menu.php b/src/wp-admin/network/menu.php
index ee987c83c64ed..971302037cd83 100644
--- a/src/wp-admin/network/menu.php
+++ b/src/wp-admin/network/menu.php
@@ -13,7 +13,7 @@
 }
 
 /* translators: Network menu item. */
-$menu[2] = array( __( 'Dashboard' ), 'manage_network', 'index.php', '', 'menu-top menu-top-first menu-icon-dashboard', 'menu-dashboard', 'dashicons-dashboard' );
+$menu[2] = array( __( 'Dashboard' ), 'manage_network', 'index.php', '', 'menu-top menu-top-first menu-icon-dashboard', 'menu-dashboard', 'core/dashboard' );
 
 $submenu['index.php'][0] = array( __( 'Home' ), 'read', 'index.php' );
 
@@ -53,11 +53,11 @@
 $menu[4] = array( '', 'read', 'separator1', '', 'wp-menu-separator' );
 
 /* translators: Sites menu item. */
-$menu[5]                  = array( __( 'Sites' ), 'manage_sites', 'sites.php', '', 'menu-top menu-icon-site', 'menu-site', 'dashicons-admin-multisite' );
+$menu[5]                  = array( __( 'Sites' ), 'manage_sites', 'sites.php', '', 'menu-top menu-icon-site', 'menu-site', 'core/grid' );
 $submenu['sites.php'][5]  = array( __( 'All Sites' ), 'manage_sites', 'sites.php' );
 $submenu['sites.php'][10] = array( __( 'Add Site' ), 'create_sites', 'site-new.php' );
 
-$menu[10]                 = array( __( 'Users' ), 'manage_network_users', 'users.php', '', 'menu-top menu-icon-users', 'menu-users', 'dashicons-admin-users' );
+$menu[10]                 = array( __( 'Users' ), 'manage_network_users', 'users.php', '', 'menu-top menu-icon-users', 'menu-users', 'core/people' );
 $submenu['users.php'][5]  = array( __( 'All Users' ), 'manage_network_users', 'users.php' );
 $submenu['users.php'][10] = array( __( 'Add User' ), 'create_users', 'user-new.php' );
 
@@ -77,10 +77,10 @@
 		'',
 		'menu-top menu-icon-appearance',
 		'menu-appearance',
-		'dashicons-admin-appearance',
+		'core/brush',
 	);
 } else {
-	$menu[15] = array( __( 'Themes' ), 'manage_network_themes', 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'dashicons-admin-appearance' );
+	$menu[15] = array( __( 'Themes' ), 'manage_network_themes', 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'core/brush' );
 }
 $submenu['themes.php'][5]  = array( __( 'Installed Themes' ), 'manage_network_themes', 'themes.php' );
 $submenu['themes.php'][10] = array( __( 'Add Theme' ), 'install_themes', 'theme-install.php' );
@@ -102,16 +102,16 @@
 		'',
 		'menu-top menu-icon-plugins',
 		'menu-plugins',
-		'dashicons-admin-plugins',
+		'core/plugins',
 	);
 } else {
-	$menu[20] = array( __( 'Plugins' ), 'manage_network_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'dashicons-admin-plugins' );
+	$menu[20] = array( __( 'Plugins' ), 'manage_network_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'core/plugins' );
 }
 $submenu['plugins.php'][5]  = array( __( 'Installed Plugins' ), 'manage_network_plugins', 'plugins.php' );
 $submenu['plugins.php'][10] = array( __( 'Add Plugin' ), 'install_plugins', 'plugin-install.php' );
 $submenu['plugins.php'][15] = array( __( 'Plugin File Editor' ), 'edit_plugins', 'plugin-editor.php' );
 
-$menu[25] = array( __( 'Settings' ), 'manage_network_options', 'settings.php', '', 'menu-top menu-icon-settings', 'menu-settings', 'dashicons-admin-settings' );
+$menu[25] = array( __( 'Settings' ), 'manage_network_options', 'settings.php', '', 'menu-top menu-icon-settings', 'menu-settings', 'core/settings' );
 if ( defined( 'MULTISITE' ) && defined( 'WP_ALLOW_MULTISITE' ) && WP_ALLOW_MULTISITE ) {
 	$submenu['settings.php'][5]  = array( __( 'Network Settings' ), 'manage_network_options', 'settings.php' );
 	$submenu['settings.php'][10] = array( __( 'Network Setup' ), 'setup_network', 'setup.php' );
diff --git a/src/wp-includes/admin-bar.php b/src/wp-includes/admin-bar.php
index 50868b11a2870..d57f2bd365328 100644
--- a/src/wp-includes/admin-bar.php
+++ b/src/wp-includes/admin-bar.php
@@ -115,6 +115,20 @@ function wp_admin_bar_render() {
 	$rendered = true;
 }
 
+/**
+ * Returns inline SVG markup wrapped for use as an admin bar node icon.
+ *
+ * @since 7.1.0
+ * @access private
+ *
+ * @param string $icon_name Namespaced core icon name, e.g. 'core/wordpress'.
+ * @return string Admin bar icon markup.
+ */
+function _wp_admin_bar_icon( $icon_name ) {
+	$svg = wp_get_icon( $icon_name, array( 'size' => 22 ) );
+	return '<span class="ab-icon svg-icon" aria-hidden="true">' . $svg . '</span>';
+}
+
 /**
  * Adds the WordPress logo menu.
  *
@@ -136,7 +150,7 @@ function wp_admin_bar_wp_menu( $wp_admin_bar ) {
 
 	$wp_logo_menu_args = array(
 		'id'    => 'wp-logo',
-		'title' => '<span class="ab-icon" aria-hidden="true"></span><span class="screen-reader-text">' .
+		'title' => _wp_admin_bar_icon( 'core/wordpress' ) . '<span class="screen-reader-text">' .
 				/* translators: Hidden accessibility text. */
 				__( 'About WordPress' ) .
 			'</span>',
@@ -242,7 +256,7 @@ function wp_admin_bar_sidebar_toggle( $wp_admin_bar ) {
 		$wp_admin_bar->add_node(
 			array(
 				'id'    => 'menu-toggle',
-				'title' => '<span class="ab-icon" aria-hidden="true"></span><span class="screen-reader-text">' .
+				'title' => _wp_admin_bar_icon( 'core/menu' ) . '<span class="screen-reader-text">' .
 						/* translators: Hidden accessibility text. */
 						__( 'Menu' ) .
 					'</span>',
@@ -281,7 +295,7 @@ function wp_admin_bar_my_account_item( $wp_admin_bar ) {
 		array(
 			'id'     => 'my-account',
 			'parent' => 'top-secondary',
-			'title'  => $howdy . $avatar,
+			'title'  => $howdy . ( empty( $avatar ) ? _wp_admin_bar_icon( 'core/people' ) : $avatar ),
 			'href'   => $profile_url,
 			'meta'   => array(
 				'class'      => empty( $avatar ) ? '' : 'with-avatar',
@@ -389,7 +403,7 @@ function wp_admin_bar_site_menu( $wp_admin_bar ) {
 	$wp_admin_bar->add_node(
 		array(
 			'id'    => 'site-name',
-			'title' => $title,
+			'title' => _wp_admin_bar_icon( ( is_admin() || ! current_user_can( 'read' ) ) ? 'core/home' : 'core/dashboard' ) . $title,
 			'href'  => ( is_admin() || ! current_user_can( 'read' ) ) ? home_url( '/' ) : admin_url(),
 			'meta'  => array(
 				'menu_title' => $title,
@@ -475,7 +489,7 @@ function wp_admin_bar_edit_site_menu( $wp_admin_bar ) {
 	$wp_admin_bar->add_node(
 		array(
 			'id'    => 'site-editor',
-			'title' => __( 'Edit Site' ),
+			'title' => _wp_admin_bar_icon( 'core/brush' ) . __( 'Edit Site' ),
 			'href'  => add_query_arg(
 				array(
 					'postType' => 'wp_template',
@@ -530,7 +544,7 @@ function wp_admin_bar_customize_menu( $wp_admin_bar ) {
 	$wp_admin_bar->add_node(
 		array(
 			'id'    => 'customize',
-			'title' => __( 'Customize' ),
+			'title' => _wp_admin_bar_icon( 'core/brush' ) . __( 'Customize' ),
 			'href'  => $customize_url,
 			'meta'  => array(
 				'class' => 'hide-if-no-customize',
@@ -567,7 +581,7 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
 	$wp_admin_bar->add_node(
 		array(
 			'id'    => 'my-sites',
-			'title' => __( 'My Sites' ),
+			'title' => _wp_admin_bar_icon( 'core/grid' ) . __( 'My Sites' ),
 			'href'  => $my_sites_url,
 		)
 	);
@@ -688,7 +702,7 @@ function wp_admin_bar_my_sites_menu( $wp_admin_bar ) {
 				( wp_lazy_loading_enabled( 'img', 'site_icon_in_toolbar' ) ? ' loading="lazy"' : '' )
 			);
 		} else {
-			$blavatar = '<div class="blavatar"></div>';
+			$blavatar = '<div class="blavatar">' . wp_get_icon( 'core/wordpress', array( 'size' => 16 ) ) . '</div>';
 		}
 
 		$blogname = $blog->blogname;
@@ -902,7 +916,7 @@ function wp_admin_bar_edit_menu( $wp_admin_bar ) {
 				$wp_admin_bar->add_node(
 					array(
 						'id'    => 'edit',
-						'title' => $post_type_object->labels->edit_item,
+						'title' => _wp_admin_bar_icon( 'core/pencil' ) . $post_type_object->labels->edit_item,
 						'href'  => $edit_post_link,
 					)
 				);
@@ -914,7 +928,7 @@ function wp_admin_bar_edit_menu( $wp_admin_bar ) {
 				$wp_admin_bar->add_node(
 					array(
 						'id'    => 'edit',
-						'title' => $tax->labels->edit_item,
+						'title' => _wp_admin_bar_icon( 'core/pencil' ) . $tax->labels->edit_item,
 						'href'  => $edit_term_link,
 					)
 				);
@@ -925,7 +939,7 @@ function wp_admin_bar_edit_menu( $wp_admin_bar ) {
 				$wp_admin_bar->add_node(
 					array(
 						'id'    => 'edit',
-						'title' => __( 'Edit User' ),
+						'title' => _wp_admin_bar_icon( 'core/pencil' ) . __( 'Edit User' ),
 						'href'  => $edit_user_link,
 					)
 				);
@@ -956,8 +970,8 @@ function wp_admin_bar_command_palette_menu( WP_Admin_Bar $wp_admin_bar ): void {
 	$apple_pattern   = 'Macintosh|Mac OS X|Mac_PowerPC';
 	$is_apple_os     = (bool) preg_match( "/{$apple_pattern}/i", $_SERVER['HTTP_USER_AGENT'] ?? '' );
 	$shortcut_label  = $is_apple_os ? $shortcut_labels['appleOS'] : $shortcut_labels['default'];
-	$title           = sprintf(
-		'<span class="ab-icon" aria-hidden="true"></span><span class="ab-label"><kbd>%s</kbd><span class="screen-reader-text"> %s</span></span>',
+	$title           = _wp_admin_bar_icon( 'core/search' ) . sprintf(
+		'<span class="ab-label"><kbd>%s</kbd><span class="screen-reader-text"> %s</span></span>',
 		$shortcut_label,
 		/* translators: Hidden accessibility text. */
 		__( 'Open command palette' ),
@@ -1054,7 +1068,7 @@ function wp_admin_bar_new_content_menu( $wp_admin_bar ) {
 		return;
 	}
 
-	$title = '<span class="ab-icon" aria-hidden="true"></span><span class="ab-label">' . _x( 'New', 'admin bar menu group label' ) . '</span>';
+	$title = _wp_admin_bar_icon( 'core/plus' ) . '<span class="ab-label">' . _x( 'New', 'admin bar menu group label' ) . '</span>';
 
 	$wp_admin_bar->add_node(
 		array(
@@ -1112,7 +1126,7 @@ function wp_admin_bar_comments_menu( $wp_admin_bar ) {
 		number_format_i18n( $awaiting_mod )
 	);
 
-	$icon   = '<span class="ab-icon" aria-hidden="true"></span>';
+	$icon   = _wp_admin_bar_icon( 'core/comment' );
 	$title  = '<span class="ab-label awaiting-mod pending-count count-' . $awaiting_mod . '" aria-hidden="true">' . number_format_i18n( $awaiting_mod ) . '</span>';
 	$title .= '<span class="screen-reader-text comments-in-moderation-text">' . $awaiting_text . '</span>';
 
@@ -1227,7 +1241,7 @@ function wp_admin_bar_updates_menu( $wp_admin_bar ) {
 		number_format_i18n( $update_data['counts']['total'] )
 	);
 
-	$icon   = '<span class="ab-icon" aria-hidden="true"></span>';
+	$icon   = _wp_admin_bar_icon( 'core/update' );
 	$title  = '<span class="ab-label" aria-hidden="true">' . number_format_i18n( $update_data['counts']['total'] ) . '</span>';
 	$title .= '<span class="screen-reader-text updates-available-text">' . $updates_text . '</span>';
 
@@ -1253,6 +1267,7 @@ function wp_admin_bar_search_menu( $wp_admin_bar ) {
 	}
 
 	$form  = '<form action="' . esc_url( home_url( '/' ) ) . '" method="get" id="adminbarsearch">';
+	$form .= _wp_admin_bar_icon( 'core/search' );
 	$form .= '<input class="adminbar-input" name="s" id="adminbar-search" type="text" value="" maxlength="150" />';
 	$form .= '<label for="adminbar-search" class="screen-reader-text">' .
 			/* translators: Hidden accessibility text. */
diff --git a/src/wp-includes/css/admin-bar.css b/src/wp-includes/css/admin-bar.css
index fb6986e7ecbed..d9622bafa6323 100644
--- a/src/wp-includes/css/admin-bar.css
+++ b/src/wp-includes/css/admin-bar.css
@@ -243,6 +243,28 @@ html:lang(he-il) .rtl #wpadminbar * {
 	margin-right: 6px;
 }
 
+#wpadminbar > #wp-toolbar > #wp-admin-bar-root-default .ab-icon.svg-icon,
+#wpadminbar .ab-icon.svg-icon {
+	margin-right: 4px;
+}
+
+#wpadminbar .ab-icon.svg-icon {
+	display: flex;
+	align-items: center;
+	justify-content: center;
+	box-sizing: border-box;
+	height: 32px;
+	padding: 0;
+}
+
+#wpadminbar .ab-icon svg {
+	width: 22px;
+	height: 22px;
+	fill: currentColor;
+	transition: color .1s ease-in-out;
+}
+
+#wpadminbar .ab-icon,
 #wpadminbar .ab-icon:before,
 #wpadminbar .ab-item:before,
 #wpadminbar #adminbarsearch:before {
@@ -286,11 +308,15 @@ html:lang(he-il) .rtl #wpadminbar * {
 #wpadminbar .quicklinks .menupop.hover ul li div[tabindex]:focus,
 #wpadminbar.nojs .quicklinks .menupop:hover ul li a:hover,
 #wpadminbar.nojs .quicklinks .menupop:hover ul li a:focus,
+#wpadminbar li:hover .ab-icon,
 #wpadminbar li:hover .ab-icon:before,
 #wpadminbar li:hover .ab-item:before,
+#wpadminbar li a:focus .ab-icon,
 #wpadminbar li a:focus .ab-icon:before,
 #wpadminbar li .ab-item:focus:before,
+#wpadminbar li .ab-item:focus .ab-icon,
 #wpadminbar li .ab-item:focus .ab-icon:before,
+#wpadminbar li.hover .ab-icon,
 #wpadminbar li.hover .ab-icon:before,
 #wpadminbar li.hover .ab-item:before,
 #wpadminbar li:hover #adminbarsearch:before,
@@ -298,11 +324,13 @@ html:lang(he-il) .rtl #wpadminbar * {
 	color: #72aee6;
 }
 
+#wpadminbar.mobile .quicklinks .ab-icon,
 #wpadminbar.mobile .quicklinks .ab-icon:before,
 #wpadminbar.mobile .quicklinks .ab-item:before {
 	color: #c3c4c7;
 }
 
+#wpadminbar.mobile .quicklinks .hover .ab-icon,
 #wpadminbar.mobile .quicklinks .hover .ab-icon:before,
 #wpadminbar.mobile .quicklinks .hover .ab-item:before {
 	color: #72aee6;
@@ -411,20 +439,12 @@ html:lang(he-il) .rtl #wpadminbar * {
 	display: inline-block;
 }
 
-#wp-admin-bar-my-account > .ab-item:before {
-	content: "\f110";
-	content: "\f110" / '';
-	top: 2px;
+#wpadminbar #wp-admin-bar-my-account > .ab-item .ab-icon {
 	float: right;
 	margin-left: 6px;
 	margin-right: 0;
 }
 
-#wp-admin-bar-my-account.with-avatar > .ab-item:before {
-	display: none;
-	content: none;
-}
-
 #wp-admin-bar-my-account.with-avatar > ul {
 	min-width: 270px;
 }
@@ -495,21 +515,17 @@ html:lang(he-il) .rtl #wpadminbar * {
 /**
  * WP Logo
  */
-#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon {
-	width: 15px;
-	height: 20px;
+#wpadminbar #wp-toolbar #wp-admin-bar-wp-logo > .ab-item .ab-icon {
 	margin-right: 0;
-	padding: 6px 0 5px;
 }
 
 #wpadminbar #wp-admin-bar-wp-logo > .ab-item {
 	padding: 0 7px;
 }
 
-#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before {
-	content: "\f120";
-	content: "\f120" / '';
-	top: 2px;
+#wpadminbar #wp-admin-bar-wp-logo .ab-icon svg {
+	width: 24px;
+	height: 24px;
 }
 
 /*
@@ -518,9 +534,7 @@ html:lang(he-il) .rtl #wpadminbar * {
 #wpadminbar .quicklinks li .blavatar {
 	display: inline-block;
 	vertical-align: middle;
-	font: normal 16px/1 dashicons !important;
-	-webkit-font-smoothing: antialiased;
-	-moz-osx-font-smoothing: grayscale;
+	line-height: 0;
 	color: #f0f0f1;
 }
 
@@ -531,97 +545,34 @@ html:lang(he-il) .rtl #wpadminbar * {
 }
 
 #wpadminbar .quicklinks li img.blavatar,
-#wpadminbar .quicklinks li div.blavatar:before {
+#wpadminbar .quicklinks li div.blavatar svg {
 	height: 16px;
 	width: 16px;
 	margin: 0 8px 2px -2px;
 }
 
-#wpadminbar .quicklinks li div.blavatar:before {
-	content: "\f120";
-	content: "\f120" / '';
+#wpadminbar .quicklinks li div.blavatar svg {
 	display: inline-block;
+	margin-bottom: 0;
+	fill: currentColor;
+	position: relative;
+	top: -2px;
 }
 
 #wpadminbar #wp-admin-bar-appearance {
 	margin-top: -12px;
 }
 
-#wpadminbar #wp-admin-bar-my-sites > .ab-item:before,
-#wpadminbar #wp-admin-bar-site-name > .ab-item:before {
-	content: "\f541";
-	content: "\f541" / '';
-	top: 2px;
-}
-
-#wpadminbar #wp-admin-bar-site-editor > .ab-item:before {
-	content: "\f100";
-	content: "\f100" / '';
-	top: 2px;
-}
-
-#wpadminbar #wp-admin-bar-customize > .ab-item:before {
-	content: "\f540";
-	content: "\f540" / '';
-	top: 2px;
-}
-
-#wpadminbar #wp-admin-bar-edit > .ab-item:before {
-	content: "\f464";
-	content: "\f464" / '';
-	top: 2px;
-}
-
-#wpadminbar #wp-admin-bar-site-name > .ab-item:before {
-	content: "\f226";
-	content: "\f226" / '';
-}
-
-.wp-admin #wpadminbar #wp-admin-bar-site-name > .ab-item:before {
-	content: "\f102";
-	content: "\f102" / '';
-}
-
-
-
-/**
- * Comments
- */
-#wpadminbar #wp-admin-bar-comments .ab-icon {
-	margin-right: 6px;
-}
-
-#wpadminbar #wp-admin-bar-comments .ab-icon:before {
-	content: "\f101";
-	content: "\f101" / '';
-	top: 3px;
-}
-
-/**
- * New Content
- */
-#wpadminbar #wp-admin-bar-new-content .ab-icon:before {
-	content: "\f132";
-	content: "\f132" / '';
-	top: 4px;
-}
 
 /**
  * Updates
  */
-#wpadminbar #wp-admin-bar-updates .ab-icon:before {
-	content: "\f463";
-	content: "\f463" / '';
-	top: 2px;
-}
-
-#wpadminbar #wp-admin-bar-updates.spin .ab-icon:before {
-	display: inline-block;
+#wpadminbar #wp-admin-bar-updates.spin .ab-icon svg {
 	animation: rotation 2s infinite linear;
 }
 
 @media (prefers-reduced-motion: reduce) {
-	#wpadminbar #wp-admin-bar-updates.spin .ab-icon:before {
+	#wpadminbar #wp-admin-bar-updates.spin .ab-icon svg {
 		animation: none;
 	}
 }
@@ -642,17 +593,13 @@ html:lang(he-il) .rtl #wpadminbar * {
 	z-index: 1;
 }
 
-#wpadminbar #adminbarsearch:before {
+#wpadminbar #adminbarsearch .ab-icon {
 	position: absolute;
 	top: 6px;
 	left: 5px;
 	z-index: 20;
-	font: normal 20px/1 dashicons !important;
-	content: "\f179";
-	content: "\f179" / '';
-	speak: never;
-	-webkit-font-smoothing: antialiased;
-	-moz-osx-font-smoothing: grayscale;
+	height: auto;
+	pointer-events: none;
 }
 
 /* The admin bar search field needs to reset many styles that might be inherited from the active Theme CSS. See ticket #40313. */
@@ -698,12 +645,6 @@ html:lang(he-il) .rtl #wpadminbar * {
 /**
  * Command Palette
  */
-#wpadminbar #wp-admin-bar-command-palette .ab-icon:before {
-	content: "\f179";
-	content: "\f179" / '';
-	top: 3px;
-}
-
 #wpadminbar #wp-admin-bar-command-palette kbd {
 	background: transparent;
 }
@@ -787,7 +728,8 @@ html:lang(he-il) .rtl #wpadminbar * {
 		width: auto;
 	}
 
-	#wpadminbar .ab-icon {
+	#wpadminbar .ab-icon,
+	#wpadminbar .ab-icon.svg-icon {
 		font: 40px/1 dashicons !important;
 		margin: 0;
 		padding: 0;
@@ -796,6 +738,11 @@ html:lang(he-il) .rtl #wpadminbar * {
 		text-align: center;
 	}
 
+	#wpadminbar .ab-icon svg {
+		width: 34px;
+		height: 34px;
+	}
+
 	#wpadminbar .ab-icon:before {
 		text-align: center;
 	}
@@ -868,9 +815,9 @@ html:lang(he-il) .rtl #wpadminbar * {
 		vertical-align: top;
 	}
 
-	#wpadminbar #wp-admin-bar-wp-logo > .ab-item .ab-icon:before {
-		font: 28px/1 dashicons !important;
-		top: -3px;
+	#wpadminbar #wp-admin-bar-wp-logo .ab-icon svg {
+		width: 32px;
+		height: 32px;
 	}
 
 	#wpadminbar .ab-icon,
@@ -895,29 +842,14 @@ html:lang(he-il) .rtl #wpadminbar * {
 	}
 
 	#wpadminbar > #wp-toolbar > #wp-admin-bar-root-default .ab-icon,
+	#wpadminbar > #wp-toolbar > #wp-admin-bar-root-default .ab-icon.svg-icon,
 	#wpadminbar .ab-icon,
+	#wpadminbar .ab-icon.svg-icon,
 	#wpadminbar .ab-item:before {
 		padding: 0;
 		margin-right: 0;
 	}
 
-	#wpadminbar #wp-admin-bar-edit > .ab-item:before,
-	#wpadminbar #wp-admin-bar-my-sites > .ab-item:before,
-	#wpadminbar #wp-admin-bar-site-name > .ab-item:before,
-	#wpadminbar #wp-admin-bar-site-editor > .ab-item:before,
-	#wpadminbar #wp-admin-bar-customize > .ab-item:before,
-	#wpadminbar #wp-admin-bar-my-account > .ab-item:before,
-	#wpadminbar #wp-admin-bar-command-palette .ab-icon:before {
-		display: block;
-		text-indent: 0;
-		font: normal 32px/1 dashicons;
-		top: 7px;
-		width: 52px;
-		text-align: center;
-		-webkit-font-smoothing: antialiased;
-		-moz-osx-font-smoothing: grayscale;
-	}
-
 	#wpadminbar #wp-admin-bar-appearance {
 		margin-top: 0;
 	}
@@ -931,40 +863,17 @@ html:lang(he-il) .rtl #wpadminbar * {
 		display: none;
 	}
 
-	/* New Content */
-	#wpadminbar #wp-admin-bar-new-content .ab-icon:before {
-		top: 0;
-		line-height: 1.26;
-		height: 46px !important;
-		text-align: center;
-		width: 52px;
-		display: block;
-	}
-
 	/* Updates */
 	#wpadminbar #wp-admin-bar-updates {
 		text-align: center;
 	}
 
-	#wpadminbar #wp-admin-bar-updates .ab-icon:before {
-		top: 3px;
-	}
-
 	/* Comments and Command Palette */
 	#wpadminbar #wp-admin-bar-comments .ab-icon,
 	#wpadminbar #wp-admin-bar-command-palette .ab-icon {
 		margin: 0;
 	}
 
-	#wpadminbar #wp-admin-bar-comments .ab-icon:before,
-	#wpadminbar #wp-admin-bar-command-palette .ab-icon:before {
-		display: block;
-		font-size: 34px;
-		height: 46px;
-		line-height: 1.38235294;
-		top: 0;
-	}
-
 	/* My Account */
 	#wpadminbar #wp-admin-bar-my-account > a {
 		position: relative;
diff --git a/src/wp-includes/icons.php b/src/wp-includes/icons.php
new file mode 100644
index 0000000000000..6036c95f9b5fc
--- /dev/null
+++ b/src/wp-includes/icons.php
@@ -0,0 +1,81 @@
+<?php
+/**
+ * Icons API: Icon rendering helper functions.
+ *
+ * @package WordPress
+ * @subpackage Icons
+ * @since 7.1.0
+ */
+
+/**
+ * Returns the SVG markup for a registered icon.
+ *
+ * @since 7.1.0
+ *
+ * @param string $name The namespaced icon name (e.g. 'core/plus',
+ *                     'core/arrow-down', 'my-plugin/custom-icon').
+ * @param array  $args {
+ *     Optional. Arguments for the icon. Default empty array.
+ *
+ *     @type int|null $size  Width and height in pixels. Pass null to leave the
+ *                           SVG's intrinsic dimensions untouched. Default 24.
+ *     @type string   $class Additional CSS class names. Multiple classes may be
+ *                           provided as a space-separated string. Default empty string.
+ *     @type string   $label Accessible label. If provided, the SVG gets
+ *                           role="img" and aria-label. If omitted, the SVG
+ *                           gets aria-hidden="true" and focusable="false".
+ *                           Default empty string.
+ * }
+ * @return string SVG markup for the icon, or empty string if not found.
+ */
+function wp_get_icon( $name, $args = array() ) {
+	$icon = WP_Icons_Registry::get_instance()->get_registered_icon( $name );
+	if ( is_null( $icon ) ) {
+		return '';
+	}
+
+	$svg = $icon['content'];
+	if ( empty( $svg ) ) {
+		return '';
+	}
+
+	$args = wp_parse_args(
+		$args,
+		array(
+			'size'  => 24,
+			'class' => '',
+			'label' => '',
+		)
+	);
+
+	$processor = new WP_HTML_Tag_Processor( $svg );
+	if ( ! $processor->next_tag( 'svg' ) ) {
+		return '';
+	}
+
+	if ( is_numeric( $args['size'] ) ) {
+		$size = absint( $args['size'] );
+		$processor->set_attribute( 'width', (string) $size );
+		$processor->set_attribute( 'height', (string) $size );
+	}
+
+	if ( ! empty( $args['class'] ) ) {
+		foreach ( preg_split( '/\s+/', $args['class'], -1, PREG_SPLIT_NO_EMPTY ) as $class_name ) {
+			$processor->add_class( $class_name );
+		}
+	}
+
+	if ( ! empty( $args['label'] ) ) {
+		$processor->set_attribute( 'role', 'img' );
+		$processor->set_attribute( 'aria-label', $args['label'] );
+		$processor->remove_attribute( 'aria-hidden' );
+		$processor->remove_attribute( 'focusable' );
+	} else {
+		$processor->set_attribute( 'aria-hidden', 'true' );
+		$processor->set_attribute( 'focusable', 'false' );
+		$processor->remove_attribute( 'role' );
+		$processor->remove_attribute( 'aria-label' );
+	}
+
+	return $processor->get_updated_html();
+}
diff --git a/src/wp-includes/post.php b/src/wp-includes/post.php
index 005ccadd62e34..9698825593077 100644
--- a/src/wp-includes/post.php
+++ b/src/wp-includes/post.php
@@ -32,7 +32,7 @@ function create_initial_post_types() {
 			'capability_type'       => 'post',
 			'map_meta_cap'          => true,
 			'menu_position'         => 5,
-			'menu_icon'             => 'dashicons-admin-post',
+			'menu_icon'             => 'core/post',
 			'hierarchical'          => false,
 			'rewrite'               => false,
 			'query_var'             => false,
@@ -68,7 +68,7 @@ function create_initial_post_types() {
 			'capability_type'       => 'page',
 			'map_meta_cap'          => true,
 			'menu_position'         => 20,
-			'menu_icon'             => 'dashicons-admin-page',
+			'menu_icon'             => 'core/page',
 			'hierarchical'          => true,
 			'rewrite'               => false,
 			'query_var'             => false,
@@ -110,7 +110,7 @@ function create_initial_post_types() {
 				'create_posts' => 'upload_files',
 			),
 			'map_meta_cap'          => true,
-			'menu_icon'             => 'dashicons-admin-media',
+			'menu_icon'             => 'core/media',
 			'hierarchical'          => false,
 			'rewrite'               => false,
 			'query_var'             => false,
diff --git a/src/wp-settings.php b/src/wp-settings.php
index ef5c7784ee561..1e22587d9a8dd 100644
--- a/src/wp-settings.php
+++ b/src/wp-settings.php
@@ -298,6 +298,7 @@
 require ABSPATH . WPINC . '/class-wp-connector-registry.php';
 require ABSPATH . WPINC . '/connectors.php';
 require ABSPATH . WPINC . '/class-wp-icons-registry.php';
+require ABSPATH . WPINC . '/icons.php';
 require ABSPATH . WPINC . '/widgets.php';
 require ABSPATH . WPINC . '/class-wp-widget.php';
 require ABSPATH . WPINC . '/class-wp-widget-factory.php';
diff --git a/tests/phpunit/tests/icons/wpGetIcon.php b/tests/phpunit/tests/icons/wpGetIcon.php
new file mode 100644
index 0000000000000..270f94104550c
--- /dev/null
+++ b/tests/phpunit/tests/icons/wpGetIcon.php
@@ -0,0 +1,125 @@
+<?php
+/**
+ * Unit tests covering the wp_get_icon() function.
+ *
+ * @package WordPress
+ * @subpackage Icons
+ * @since 7.1.0
+ *
+ * @group icons
+ *
+ * @covers ::wp_get_icon
+ */
+class Tests_Icons_WpGetIcon extends WP_UnitTestCase {
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_returns_svg_for_known_icon() {
+		$output = wp_get_icon( 'core/plus' );
+		$this->assertStringStartsWith( '<svg ', $output );
+		$this->assertStringContainsString( '</svg>', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_returns_empty_string_for_unknown_icon() {
+		$output = wp_get_icon( 'this-icon-does-not-exist' );
+		$this->assertSame( '', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_default_attributes() {
+		$output = wp_get_icon( 'core/plus' );
+		// WP_HTML_Tag_Processor lowercases attribute names.
+		$this->assertStringContainsString( 'viewbox="0 0 24 24"', $output );
+		$this->assertStringContainsString( 'width="24"', $output );
+		$this->assertStringContainsString( 'height="24"', $output );
+		$this->assertStringContainsString( 'aria-hidden="true"', $output );
+		$this->assertStringContainsString( 'focusable="false"', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_custom_size() {
+		$output = wp_get_icon( 'core/plus', array( 'size' => 32 ) );
+		$this->assertStringContainsString( 'width="32"', $output );
+		$this->assertStringContainsString( 'height="32"', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_size_null_leaves_dimensions_untouched() {
+		$output = wp_get_icon( 'core/plus', array( 'size' => null ) );
+		$this->assertStringNotContainsString( 'width=', $output );
+		$this->assertStringNotContainsString( 'height=', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_size_zero_outputs_zero_dimensions() {
+		$output = wp_get_icon( 'core/plus', array( 'size' => 0 ) );
+		$this->assertStringContainsString( 'width="0"', $output );
+		$this->assertStringContainsString( 'height="0"', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_custom_class() {
+		$output = wp_get_icon( 'core/plus', array( 'class' => 'my-button-icon' ) );
+		$this->assertStringContainsString( 'class="my-button-icon"', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_multiple_classes() {
+		$output = wp_get_icon( 'core/plus', array( 'class' => 'foo bar baz' ) );
+		$this->assertStringContainsString( 'class="foo bar baz"', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_with_label() {
+		$output = wp_get_icon( 'core/plus', array( 'label' => 'Add item' ) );
+		$this->assertStringContainsString( 'role="img"', $output );
+		$this->assertStringContainsString( 'aria-label="Add item"', $output );
+		$this->assertStringNotContainsString( 'aria-hidden', $output );
+		$this->assertStringNotContainsString( 'focusable', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_without_label_is_hidden() {
+		$output = wp_get_icon( 'core/plus' );
+		$this->assertStringContainsString( 'aria-hidden="true"', $output );
+		$this->assertStringContainsString( 'focusable="false"', $output );
+		$this->assertStringNotContainsString( 'role="img"', $output );
+		$this->assertStringNotContainsString( 'aria-label', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_contains_svg_content() {
+		$output = wp_get_icon( 'core/plus' );
+		$this->assertStringContainsString( '<path ', $output );
+	}
+
+	/**
+	 * @ticket 64847
+	 */
+	public function test_wp_get_icon_escapes_attributes() {
+		$output = wp_get_icon( 'core/plus', array( 'class' => '"><script>alert(1)</script>' ) );
+		$this->assertStringNotContainsString( '<script>', $output );
+	}
+}
diff --git a/tests/phpunit/tests/post/types.php b/tests/phpunit/tests/post/types.php
index 96519586d6cff..0305e948647fd 100644
--- a/tests/phpunit/tests/post/types.php
+++ b/tests/phpunit/tests/post/types.php
@@ -287,9 +287,9 @@ public function test_get_post_type_object_casting() {
 	 * @ticket 38844
 	 */
 	public function test_get_post_type_object_includes_menu_icon_for_builtin_post_types() {
-		$this->assertSame( 'dashicons-admin-post', get_post_type_object( 'post' )->menu_icon );
-		$this->assertSame( 'dashicons-admin-page', get_post_type_object( 'page' )->menu_icon );
-		$this->assertSame( 'dashicons-admin-media', get_post_type_object( 'attachment' )->menu_icon );
+		$this->assertSame( 'core/post', get_post_type_object( 'post' )->menu_icon );
+		$this->assertSame( 'core/page', get_post_type_object( 'page' )->menu_icon );
+		$this->assertSame( 'core/media', get_post_type_object( 'attachment' )->menu_icon );
 	}
 
 	/**
diff --git a/tests/qunit/fixtures/wp-api-generated.js b/tests/qunit/fixtures/wp-api-generated.js
index fa03d9751fe99..8200a41b792a0 100644
--- a/tests/qunit/fixtures/wp-api-generated.js
+++ b/tests/qunit/fixtures/wp-api-generated.js
@@ -13713,7 +13713,7 @@ mockedApiResponse.TypesCollection = {
         "has_archive": false,
         "name": "Posts",
         "slug": "post",
-        "icon": "dashicons-admin-post",
+        "icon": "core/post",
         "taxonomies": [
             "category",
             "post_tag"
@@ -13748,7 +13748,7 @@ mockedApiResponse.TypesCollection = {
         "has_archive": false,
         "name": "Pages",
         "slug": "page",
-        "icon": "dashicons-admin-page",
+        "icon": "core/page",
         "taxonomies": [],
         "rest_base": "pages",
         "rest_namespace": "wp/v2",
@@ -13780,7 +13780,7 @@ mockedApiResponse.TypesCollection = {
         "has_archive": false,
         "name": "Media",
         "slug": "attachment",
-        "icon": "dashicons-admin-media",
+        "icon": "core/media",
         "taxonomies": [],
         "rest_base": "media",
         "rest_namespace": "wp/v2",
@@ -14074,7 +14074,7 @@ mockedApiResponse.TypeModel = {
     "has_archive": false,
     "name": "Posts",
     "slug": "post",
-    "icon": "dashicons-admin-post",
+    "icon": "core/post",
     "taxonomies": [
         "category",
         "post_tag"