Family name ราชพงษ์ (ราชพงษ์ 
, Rachapong 
, Ratphong ) , all around the world, is a rare surname. The cognomen ราชพงษ์ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Also, ราชพงษ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ratphong, ราชพงษ์, Rachaphong | Thailand |
| Rachapong | Thailand, United States |
Ratchanapong, and Ratchaphong
| ราม ราชพงษ์ Thai actor, TH (b. 1954) |
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