Surname Phumsak (Phumsak 
) , in the world, is an extremely rare family name. The last name Phumsak is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Predominantly, Phumsak is the forename as well as the last name.
Kamrit, Jomthi, Thammo, Potinam, Ruanbout, Niemela, Ekchaweng, Jirawanviruch, Thongmai, Suewanichsakul, Thiyapatanakul, Huangthongkham, Rattiyawong, Wiriyanaraanan, and Pornrattanasoros