Family name Sawasdisan (Sawasdisan 
) , all around the world, is a very rare last name. The cognomen Sawasdisan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sawasdisan | Thailand |
Matsaya, Pongsiri, Rapeephut, Thongchai, and Prapassorn