Surname สุทธิสวาท (สุทธิสวาท 
) , all around the world, is a very rare cognomen. The family name สุทธิสวาท is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, สุทธิสวาท is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สุทธิสวาท | Thailand |