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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.