Family name ธิวัฒน์ (Thiwat 
, ธิวัฒน์ , Thivatat ) , all over the world, is a rare cognomen. The last name ธิวัฒน์ is habitual in France, where it is a rare surname, Spain, where it is an extremely rare surname, and the United States. More frequently, ธิวัฒน์ is the forename as well as the last name.