Last name Namwichai (Namwichai 
) , in all the world, is a rare surname. The surname Namwichai is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
Sanga, Suthaporn, Kanaphat, Rotchana, Lapasrada, Thonchan, Itthichai, Sathaporn, Wannapa, Sakunthip, Chiraphan, Krongkarn, Thongchan, Watcharin, Yuphaporn, Sitthiphan, Arpatcharee, Chanikarn, Duangmanee, Nujaree, Nantisa, Sunan, Amporn, Prasit, Pranee, Jariya, Wisanu, Yozita, Nittaya, Sirawit, Apithon, Chamnan, Kitsada, Poonsap, Phunsap, Jirawan, Tanthip, Suwimon, and Watcharapong