Cognomen Rabdan (Rabdan 
, Равдан 
) , around the globe, is an extremely rare last name. The surname Rabdan is characteristic of Singapore, where it is a very rare surname, and Russia, where it is an extremely rare surname. More frequently, Rabdan is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Rabdan | Singapore, India |
| Равдан | Russia |