Surname Cherngchai (Cherngchai 
) , in all the world, is an extremely rare last name. Much more frequently, Cherngchai is the forename as well as the last name.
Stilabsri, Suwannaphong, Rattanawanchai, Phanthavong, Suwannakoot, Chomcherngpat, Chansungnoen, Suwanphong, Jeerararuensak, Jaemmeechai, Jampathong, Kitdamrongwinitkul, Chattanapanich, Kulsurakit, Srilabsri, Sanghirun, Ritichai, Praipruk, Aungvibool, Sangklai, Tosuwan, Thipveerakul, Phuruan, Pokatragool, Poovaviranon, Chumsawee, and Rattanasophon