Cognomen Khaisaeng (Khaisaeng 
) , globally, is a rare family name. The last name Khaisaeng is characteristic of Thailand, where it is a rare surname, and the United States, where it is an extremely rare surname. Very seldom, Khaisaeng is the forename as well as the last name.
Wira, Patiphon, Pakpimol, Walailak, Witthaya, Saengduan, Sirinapha, Suwatjanee, Chuanphit, Chrisamas, Kanyaphat, Prasobchai, Donlaporn, Thanachok, Thitiporn, Warunchay, Weerachai, Wongsakon, Benjamas, Chunphit, Songsook, Wichuta, Suwit, Sopha, Arwut, Winai, Samran, Sakrai, Pradit, Santana, Sitthichai, Sunthon, Sudawan, Sutatip, Anusara, Chanwit, Kittaya, Jirawan, Namthai, Nichada, Sukkham, and Rungruedee