Family name Khuanchai (Khuanchai 
) , all around the world, is a very rare last name. The family name Khuanchai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, Khuanchai is the forename as well as the last name.
Suno, Panturaporn, Sawatpakdee, Supparatpinyo, Chaichana, Chokwisitthichai, Daungkunpet, Jomjunyong, Thassanee, Charoenrat, Praphasatjawet, Jongjitchorb, Tasanasakorn, Thassaneee, Norkhamlar, Wongprathum, Khosinklang, Khammahom, Koompapong, Buriwong, Lapto, Inhun, Samart, Chawna, Petyim, Piboon, Wanyoa, Kamontheptawin, Yrunyongkeereemas, Sangjan, Boukaeo, Boonsom, Kachala, Phanhom, Luankla, Mccreless, Mopaeng, and Wongprasert