Throughout the world, Sitthinun (Sitthinun 
) is an extremely rare male given name. Much less frequently, Sitthinun is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Sitthinun | Thailand |
Sitthi, Dangmajang, Manitkul, Tansulawat, Norrakotr, Malithong, Muangthai, and Ieamsuksai