Family name ราชคฤห์ (Rajc 
, ราชคฤห์ 
, Ratchakhuan ) , in the entire world, is a rare surname. The surname ราชคฤห์ is habitual in Croatia, where it is a rare surname, Thailand, and Germany, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in Thailand, India, and Croatia. Very seldom, ราชคฤห์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rajc | Germany, Italy, Poland, Croatia, India |
| ราชคฤห์, Ratchakhuan, Rachagard | Thailand |
Rachakor, Racharag, Rachayakran, Rachkeeree, Rachyakran, Rajchakrij, Rajgir, Rajkishor, Rajko, Ratcahaklai, Ratchakai, Ratchakar, Ratchakhotr, Ratchakhwan, Ratchaklhao, Ratchakron, Ratchaksorn, Ratchalarm, Ratchatakawat, Ratchkhod, Ratkhamin, and Ratthakai