Surname Wongjai (Wongjai 
, วงใจ ) , in the world, is a rare family name. The family name Wongjai is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, Wongjai is the forename as well as the last name.
Urai, Navarat, Wanphon, Siriporn, Sirintip, Sirinrat, Benjamas, Kawisara, Jannista, Takdanai, Tippawan, Narisara, Naruemon, Nichanan, Wimonwan, Chawaphon, Kanoknipa, Phenprapa, Duangporn, Nattapong, Narumon, Nichaphat, Thanita, Jirawat, Sarun, Anucha, Amthon, Chalew, Boonta, Busaba, Kitiya, Janyut, Jampee, Jumpee, Sukunya, Supanat, Somchai, Angkana, Chatjira, Buaphan, Kawarin, Jutiporn, Jintana, Tanawat, and Woodtipong