In the world, ปฐมบุตร (ปฐมบุตร 
, Phathombut , Prathombut ) is a very rare male given name. The first name ปฐมบุตร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare male name. Likewise, ปฐมบุตร is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Prathombut, Phathombut, ปฐมบุตร | Thailand |