Cognomen Kwanhatai (Kwanhatai 
) , in the entire world, is an extremely rare surname. Much more frequently, Kwanhatai is the forename as well as the last name.
Tong, Noisapung, Upapong, Morprasit, Saengmuk, Sawatdee, Sawasdee, Andenmatten, Pengpoon, Theplaong, Neamsawat, Chaiyasuk, Chaiaksorn, Buntawatsak, Pongwichian, Viboonkarn, Chittiwatana, Kitsanavanich, Panyarueang, Wongkongswat, Thammaradcharak, Tungtrakool, Tueksakul, Jaipiem, Keopuangngam, Kammhuang, Inta, Pinyo, Thada, Ontao, Suklim, Somdee, Srinak, Kummhuang, Punsri, Jampol, Sathapanasupakul, Jaiauksorn, Nakniyom, Nawaka, Hoyukun, Saefang, Somkaew, Aneksuk, Areevijit, Arunkit, Boonard, Butwong, Namsuk, and Tippayamongkol