Surname Sangsit (สังสิทธิ์ 
, Sangsit 
, สังข์สิทธิ์ ) , in the world, is a rare last name. The family name Sangsit is characteristic of Thailand, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. Likewise, Sangsit is the forename as well as the last name.