Surname คันธวัฒน์ (คันธวัฒน์ 
, Khantanawat ) , worldwide, is a very rare last name. The family name คันธวัฒน์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, คันธวัฒน์ is the forename as well as the last name.