Last name เจียรนัย (เจียรนัย 
, Jiaranai 
, Jearanai ) , around the world, is quite a rare cognomen. The surname เจียรนัย is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Likewise, เจียรนัย is the forename as well as the last name.