Last name Phanchai (พันชัย 
, Phanchai 
, พานชัย ) , worldwide, is a rare family name. The cognomen Phanchai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Phanchai is the forename as well as the last name.
Nop, Khemphet, Patthama, Patnaree, Phuwadol, Rangtong, Napaporn, Benjawan, Nipaporn, Sathaporn, Sasivimol, Supachada, Kanyaporn, Thamonwan, Thitiphan, Nongnuch, Thongchai, Supaporn, Uraiwan, Narin, Sudjai, Piyada, Jinnie, Vanida, Mettrawan, Ubonrat, Sirinan, Anchisa, Chaiwat, Boodsaya, Paranee, Phattra, Narumon, Somparn, and Chalermyot