Family name Promkhwan (Promkhwan 
) , around the world, is a rare last name. The last name Promkhwan is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Promkhwan is the forename as well as the last name.
Anek, Prapatsorn, Weerachai, Weerapong, Nidchakarn, Thatsanee, Anongnat, Rattanachai, Darunee, Kanokon, Sosinee, Somboon, Areeya, Anirut, Risa, Piyapat, and Patthanapong