Cognomen Sittiwa (สิทธิวา 
, Sittiwa ) , across the world, is a very rare family name. The cognomen Sittiwa is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, Sittiwa is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sittiwa, สิทธิวา | Thailand |