Cognomen Wattanapak (Wattanapak 
, วัฒนปักษ์ , วรรธนะภาคย์ ) , in all the world, is a very rare family name. The cognomen Wattanapak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, Wattanapak is the forename as well as the last name.