Surname Pingjai (Pingjai 
) , around the globe, is a rare cognomen. The cognomen Pingjai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Pingjai is the forename as well as the last name.
Naret, Natthaphon, Pheeraphat, Kawinthida, Peeraphat, Kanyapath, Choenkhwan, Wipavadee, Jatupong, Pinmanee, Ponpitak, Panasaya, Parichat, Suvarunya, Sasitorn, Hattaya, Jerawat, Rungtip, Pongtum, Pawityada, Korawit, Chutima, Chuntip, Chathip, Aeneas, Niyom, Ratchadakorn, and Duangruthai