Family name Prayongkul (Prayongkul 
) , in the entire world, is a very rare last name. The surname Prayongkul is habitual in Sweden, where it is a rare surname, and Thailand, where it is a very rare surname.
Sumet, Somsak, Apinya, Pichet, Pongpan, Piyanud, Porranattaya, Pongkamol, Preeyaporn, and Pongsathorn