Cognomen आयुष (Ayush 
, आयुष ) , throughout the world, is quite a rare surname. The cognomen आयुष is characteristic of Mongolia, where it is quite a common surname, Mauritius, where it is quite a rare surname, and Israel. In absolute terms, it is commonest in Mongolia, India, and Nepal. Much more prevalently, आयुष is the forename as well as the last name.