diff --git a/wp-admin/network/themes.php b/wp-admin/network/themes.php
index fbc2aa033c..1b9830ccce 100644
--- a/wp-admin/network/themes.php
+++ b/wp-admin/network/themes.php
@@ -29,12 +29,10 @@ $_SERVER['REQUEST_URI'] = remove_query_arg( $temp_args, $_SERVER['REQUEST_URI']
 $referer = remove_query_arg( $temp_args, wp_get_referer() );
 
 if ( $action ) {
-	$allowed_themes = get_site_option( 'allowedthemes' );
 	switch ( $action ) {
 		case 'enable':
 			check_admin_referer('enable-theme_' . $_GET['theme']);
-			$allowed_themes[ $_GET['theme'] ] = true;
-			update_site_option( 'allowedthemes', $allowed_themes );
+			WP_Theme::network_enable_theme( $_GET['theme'] );
 			if ( false === strpos( $referer, '/network/themes.php' ) )
 				wp_redirect( network_admin_url( 'themes.php?enabled=1' ) );
 			else
@@ -42,8 +40,7 @@ if ( $action ) {
 			exit;
 		case 'disable':
 			check_admin_referer('disable-theme_' . $_GET['theme']);
-			unset( $allowed_themes[ $_GET['theme'] ] );
-			update_site_option( 'allowedthemes', $allowed_themes );
+			WP_Theme::network_disable_theme( $_GET['theme'] );
 			wp_safe_redirect( add_query_arg( 'disabled', '1', $referer ) );
 			exit;
 		case 'enable-selected':
@@ -53,9 +50,7 @@ if ( $action ) {
 				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );
 				exit;
 			}
-			foreach ( (array) $themes as $theme )
-				$allowed_themes[ $theme ] = true;
-			update_site_option( 'allowedthemes', $allowed_themes );
+			WP_Theme::network_enable_theme( (array) $themes );
 			wp_safe_redirect( add_query_arg( 'enabled', count( $themes ), $referer ) );
 			exit;
 		case 'disable-selected':
@@ -65,9 +60,7 @@ if ( $action ) {
 				wp_safe_redirect( add_query_arg( 'error', 'none', $referer ) );
 				exit;
 			}
-			foreach ( (array) $themes as $theme )
-				unset( $allowed_themes[ $theme ] );
-			update_site_option( 'allowedthemes', $allowed_themes );
+			WP_Theme::network_disable_theme( (array) $themes );
 			wp_safe_redirect( add_query_arg( 'disabled', count( $themes ), $referer ) );
 			exit;
 		case 'update-selected' :
diff --git a/wp-includes/class-wp-theme.php b/wp-includes/class-wp-theme.php
index d98fb3149b..dee2fe7c4b 100644
--- a/wp-includes/class-wp-theme.php
+++ b/wp-includes/class-wp-theme.php
@@ -1315,6 +1315,62 @@ final class WP_Theme implements ArrayAccess {
 		return (array) apply_filters( 'site_allowed_themes', $allowed_themes[ $blog_id ], $blog_id );
 	}
 
+	/**
+	 * Enable a theme for all sites on the current network.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @static
+	 * @access public
+	 *
+	 * @param string|array $stylesheets Stylesheet name or array of stylesheet names.
+	 */
+	public static function network_enable_theme( $stylesheets ) {
+		if ( ! is_multisite() ) {
+			return;
+		}
+
+		if ( ! is_array( $stylesheets ) ) {
+			$stylesheets = array( $stylesheets );
+		}
+
+		$allowed_themes = get_site_option( 'allowedthemes' );
+		foreach ( $stylesheets as $stylesheet ) {
+			$allowed_themes[ $stylesheet ] = true;
+		}
+
+		update_site_option( 'allowedthemes', $allowed_themes );
+	}
+
+	/**
+	 * Disable a theme for all sites on the current network.
+	 *
+	 * @since 4.6.0
+	 *
+	 * @static
+	 * @access public
+	 *
+	 * @param string|array $stylesheets Stylesheet name or array of stylesheet names.
+	 */
+	public static function network_disable_theme( $stylesheets ) {
+		if ( ! is_multisite() ) {
+			return;
+		}
+
+		if ( ! is_array( $stylesheets ) ) {
+			$stylesheets = array( $stylesheets );
+		}
+
+		$allowed_themes = get_site_option( 'allowedthemes' );
+		foreach ( $stylesheets as $stylesheet ) {
+			if ( isset( $allowed_themes[ $stylesheet ] ) ) {
+				unset( $allowed_themes[ $stylesheet ] );
+			}
+		}
+
+		update_site_option( 'allowedthemes', $allowed_themes );
+	}
+
 	/**
 	 * Sorts themes by name.
 	 *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index b238fef9bf..93c2261d33 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.6-alpha-37201';
+$wp_version = '4.6-alpha-37202';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.