Cognomen Pornpitak (Pornpitak 
) , in all the world, is a very rare family name. The surname Pornpitak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Pornpitak is the forename as well as the last name.
Kaoon, Kaewpluek, Pluempawung, Rakhaying, Ruengdet, Ammarttat, Permtermsin, Manochit, Pongsuwan, Sawangarrom, Choobuakaew, Bhanupongpan, Pattanachai, Pornprasat, Tangchitnob, Wongsuwan, Tubtong, Jomsubjaroen, Jakchai, Davis, Yokma, Saepoo, Somsri, Panlar, Pakdee, Jundee, Tompat, Yasiri, Maensiri, Supasuk, Kluapakdee, Polyaim, Potivejkul, Jantipa, Thavornpaiboonbut, and Kongthanajaroenchai