Surname Phetnin (เพชรนิล 
, Phetnin 
) , in the world, is quite a rare family name. The surname Phetnin is characteristic of Thailand, where it is quite a rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Phetnin is the forename as well as the last name.
Phet, Channarong, Supitchaya, Nantharut, Roongnapa, Patompong, Naphitchaya, Rungnapa, Rotchana, Krittiya, Kamonpan, Banthita, Suphanat, Siriporn, Sansanee, Chalermphorn, Wasanan, Bundith, Crystal, Angwara, Sukanya, Onweera, Ratiya, Phibun, Prumrutai, Pannee, Anuson, Suthon, Yotin, Aurai, Artit, Nisarat, and Thitiworrada