Family name Krittichai (Krittichai 
) , all over the world, is a very rare surname. The cognomen Krittichai is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, Krittichai is the forename as well as the last name.
Chujan, Phutsoydao, Yodkaew, Yutawan, Chomngarm, Maneekaew, Sitthidamrong, Sumranbumrung, Chitvarodom, Thepsurarueang, Wannaseree, Apipattanamongkol, and Kanchanachongkol