Cognomen Promngam (Promngam 
) , in the entire world, is a rare last name. The last name Promngam is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Promngam is the forename as well as the last name.
Aum, Wanlaya, Yodchai, Chantana, Chatchai, Chitrapa, Paengsri, Potjaman, Phanuwat, Wannipa, Thiwaporn, Sureeporn, Akkarapon, Kanesporn, Kornkanok, Praphunsak, Phatamaporn, Hathaipak, Weerapong, Sittichok, Wannasa, Nantiya, Darunee, Siri, Sopa, Pian, Panit, Niyom, Sangat, Samiam, Sasipa, Sumrit, Somyot, Arthit, Pimjan, Jansri, Nikorn, Sompong, Areelak, Atsanupong, Panuwat, Piyanut, Partompong, and Watcharapong