Surname พิชัยฤกษ์ (พิชัยฤกษ์ 
, Phichairerk ) , in the world, is a rare last name. The last name พิชัยฤกษ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, พิชัยฤกษ์ is the forename as well as the last name.