Family name Cleja (Cleja 
) , across the world, is a rare last name. The surname Cleja is habitual in Romania, where it is quite a rare surname, Greece, where it is a very rare surname, and Spain, where it is an extremely rare surname. Likewise, Cleja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Cleja | Greece, Romania, France, Spain, Democratic Republic of the Congo |