Family name Sowalak (Sowalak 
) , in the entire world, is an extremely rare surname. The family name Sowalak is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, Sowalak is the forename as well as the last name.
Songkroh, Chanayat, Phetpong, Bunkamnoet, and Polsongkram