Family name แสนสุทธิ์ (Sansut 
, แสนสุทธิ์ ) , across the world, is a rare surname. The last name แสนสุทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, แสนสุทธิ์ is the forename as well as the last name.