Cognomen Pongpoj (Pongpoj 
) , worldwide, is a very rare family name. The family name Pongpoj is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Pongpoj is the forename as well as the last name.
Suwan, Thavornyutikarn, Viriyakanchana, Tangkaratt, Hiranpruck, Tammakulvich, Putarungsi, Pitayatanakul, Petcharat, Wongworachart, Tepsoparn, Kumlakasing, Srishataroon, Maneewan, Limtang, Leesanwattana, Authana, Paetin, Sattra, Pimsomrudee, and Promwongsakul