Cognomen ชื่นชมรัตน์ (Chomrat 
, ชื่นชมรัตน์) , in the entire world, is a very rare family name. The last name ชื่นชมรัตน์ is characteristic of Thailand, where it is a very rare surname, and the United States, where it is an extremely rare surname. Also, ชื่นชมรัตน์ is the forename as well as the last name.