Last name ราจ (Rat 
, ราจ 
) , in the world, is a common surname. The surname ราจ is habitual in Romania, where it is quite a common surname, France, where it is quite a rare surname, and Oman. Not in comparison with a country's population, it is commonest in Bangladesh, France, and Romania. Also, ราจ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rat | Romania, Bangladesh, Myanmar, France, India |
| ราจ | Thailand |