Cognomen กลวัฒน์ (Kolawat 
, กลวัฒน์ , Konlwat) , in the world, is a very rare surname. The family name กลวัฒน์ is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. More prevalently, กลวัฒน์ is the forename as well as the last name.