All over the world, กุลวิวัฒน์ (กุลวิวัฒน์ 
, Kulwiwat , Kunwiwat ) is a very rare mostly boy's, but uncommonly feminine first name. The forename กุลวิวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare dominantly boy's, but uncommonly female name. Likewise, กุลวิวัฒน์ is the last name as well as the forename.