diff --git a/lib/experimental/fonts/font-library/class-wp-font-library.php b/lib/experimental/fonts/font-library/class-wp-font-library.php
index 47ec854a965fcb..37b1ff5c6e7f0a 100644
--- a/lib/experimental/fonts/font-library/class-wp-font-library.php
+++ b/lib/experimental/fonts/font-library/class-wp-font-library.php
@@ -98,6 +98,14 @@ public static function get_font_collection( $id ) {
 		return new WP_Error( 'font_collection_not_found', 'Font collection not found.' );
 	}
 
+	private static function get_multi_site_font_sub_dir() {
+		$font_sub_dir = '';
+		if ( is_multisite() && ! ( is_main_network() && is_main_site() ) ) {
+			$font_sub_dir = '/sites/' . get_current_blog_id();
+		}
+		return $font_sub_dir;
+	}
+
 	/**
 	 * Gets the upload directory for fonts.
 	 *
@@ -106,7 +114,9 @@ public static function get_font_collection( $id ) {
 	 * @return string Path of the upload directory for fonts.
 	 */
 	public static function get_fonts_dir() {
-		return ( defined( 'WP_FONT_DIR' ) && ! empty( WP_FONT_DIR ) ) ? WP_FONT_DIR : path_join( WP_CONTENT_DIR, 'fonts' );
+		$base_font_dir = ( defined( 'WP_FONT_DIR' ) && ! empty( WP_FONT_DIR ) ) ? WP_FONT_DIR : path_join( WP_CONTENT_DIR, 'fonts' );
+		$font_sub_dir  = self::get_multi_site_font_sub_dir();
+		return rtrim( $base_font_dir, '/' ) . $font_sub_dir;
 	}
 
 	/**
@@ -123,10 +133,11 @@ public static function get_fonts_dir() {
 	 * @return array Modified upload directory.
 	 */
 	public static function set_upload_dir( $defaults ) {
-		$font_url = ( defined( 'WP_FONT_URL' ) && ! empty( WP_FONT_URL ) ) ? set_url_scheme( WP_FONT_URL ) : content_url( 'fonts' );
+		$font_url     = ( defined( 'WP_FONT_URL' ) && ! empty( WP_FONT_URL ) ) ? set_url_scheme( WP_FONT_URL ) : content_url( 'fonts' );
+		$font_sub_dir = self::get_multi_site_font_sub_dir();
 
 		$defaults['path'] = self::get_fonts_dir();
-		$defaults['url']  = untrailingslashit( $font_url );
+		$defaults['url']  = untrailingslashit( $font_url ) . $font_sub_dir;
 		return $defaults;
 	}