Surname Kulpak (กุลภักดิ์ 
, Kulpak 
) , all over the world, is a very rare family name. The family name Kulpak is characteristic of Poland, where it is a very rare surname, Thailand, and Turkey. Not in comparison with a country's population, it is commonest in the United States, Poland, and Turkey. Very seldom, Kulpak is the forename as well as the last name.