Family name ศิริโรจน์ (Sirot 
, ศิริโรจน์ , Siriroj 
) , across the world, is quite a rare surname. The surname ศิริโรจน์ is characteristic of France, where it is quite a rare surname, Thailand, and Denmark, where it is a rare surname. Measured by absolute frequency, it is the most numerous in France, Thailand, and Philippines. Also, ศิริโรจน์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Sirot | Indonesia, Ivory Coast, Philippines, Thailand, France |
| ศิริโรจน์ | Thailand |
| Sirirot, Siriroj | United States, Thailand |
Siriahotikul, Sirihron, Siriot, Sirirho, Sirirob, Siriroch, Sirirod, Siriroek, Siriroem, Sirirojn, Sirirojna, Siriroob, Siriroohn, Siriroop, Siriroroj, Sirirorot, Sirirorote, Sirirort, Sirirote, Siriroth, Sirirotjana, Sirirotko, Sirisroj, Siritote, Sirorod, Sirorot, and Sirorut