Last name นวลรัตน์ (นวลรัตน์ 
, Nuanrat 
, Nualrat 
) , all over the world, is a rare cognomen. The cognomen นวลรัตน์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. More prevalently, นวลรัตน์ is the forename as well as the last name.