Last name ทิวาวัลย์ (ทิวาวัลย์ 
, Thiwawan ) , across the world, is a very rare cognomen. The family name ทิวาวัลย์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ทิวาวัลย์ is the forename as well as the last name.