Family name Chaiyatat (Chaiyatat 
) , all around the world, is a very rare cognomen. The cognomen Chaiyatat is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, Chaiyatat is the forename as well as the last name.
Saipan, Namsubin, Sornnarin, Apiromlerk, Chawaldit, Chotsiwanon, Bunjapamai, Kontiang, Dheandhanoo, Phueanphueng, and Hirunworakul