Cognomen ศิริรัชตพงศ์ (ศิริรัชตพงศ์ 
, Sirirachatapong , Siriratchataphong ) , all around the world, is a very rare family name. The last name ศิริรัชตพงศ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sirirachatapong, ศิริรัชตพงศ์, Siriratchataphong | Thailand |