Cognomen พิทักษ์เดช (Pitakdet 
, พิทักษ์เดช , Pitakdach ) , worldwide, is an extremely rare family name. The surname พิทักษ์เดช is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, พิทักษ์เดช is the forename as well as the last name.