diff --git a/src/wp-includes/theme.php b/src/wp-includes/theme.php
index 3c7b297b2a802..7ab1a7242e330 100644
--- a/src/wp-includes/theme.php
+++ b/src/wp-includes/theme.php
@@ -4203,6 +4203,20 @@ function wp_is_block_theme() {
 	return wp_get_theme()->is_block_theme();
 }
 
+/**
+ * Given an element name, returns a class name.
+ * Alias of WP_Theme_JSON::get_element_class_name.
+ *
+ * @since 6.1.0
+ *
+ * @param string $element The name of the element.
+ *
+ * @return string The name of the class.
+ */
+function wp_theme_get_element_class_name( $element ) {
+	return WP_Theme_JSON::get_element_class_name( $element );
+}
+
 /**
  * Adds default theme supports for block themes when the 'setup_theme' action fires.
  *