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Cognomen Rajhan (Райхан
, Rajhan
, ราชา
) , throughout the world, is quite a rare surname. The surname Rajhan is characteristic of Kyrgyzstan, where it is quite a common surname, Kazakhstan, where it is a rare surname, and Malaysia. Not in comparison with a country's population, this name is the most popular in Kyrgyzstan, India, and Kazakhstan. More prevalently, Rajhan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Райхан | Uzbekistan, Kazakhstan, Russia, Azerbaijan, Kyrgyzstan |
| Rajhan | Saudi Arabia, India, Thailand, Malaysia, Pakistan |
| ราชา | Thailand |