Surname ราชรัฐ (Ratcharat 
, ราชรัฐ , Rajarat 
) , around the world, is a very rare family name. The cognomen ราชรัฐ is habitual in Thailand, where it is a very rare surname, India, where it is an extremely rare surname, and the United States. More prevalently, ราชรัฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| ราชรัฐ, Rachatach, Ratcharat | Thailand |
| Rajarat | India, United States |
Rachcharat, Rajarathna, and Ratchrut