Family name Kanphai (Kanphai 
) , around the globe, is a rare cognomen. The surname Kanphai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Kanphai is the forename as well as the last name.
Kan, Chakriya, Bunluean, Kanokwan, Kasemsuk, Konkanok, Prachoet, Pitchaya, Nisachon, Niphawan, Samornsri, Itthikorn, Suphathida, Rungtawan, Thansinee, Nutthanan, Warissara, Chaloemrat, Preeyaporn, Pongsakorn, Khwanchanok, Witthaya, Rattanakorn, Manasnan, Narumon, Sanya, Chaon, Kamin, Wanna, Sewita, Sombun, Amporn, Authon, Aumporn, Yuanjit, Kusuma, Thanin, Supakit, Suwanna, Somphot, Ackaporn, Bunsita, Butsaba, Piyanud, Jetsada, Janpen, and Watcharinthip