Cognomen สิทธาภรณ์ (Sittaporn 
, สิทธาภรณ์ ) , throughout the world, is an extremely rare family name. Much more frequently, สิทธาภรณ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sittaporn | United States, Thailand |
| สิทธาภรณ์ | Thailand |