Family name Cilja (Циля 
, Cilja 
) , in all the world, is a very rare surname. The surname Cilja is characteristic of Kyrgyzstan, where it is a very rare surname, Ukraine, where it is an extremely rare surname, and Russia. In absolute terms, the name is most common in India, Ukraine, and Russia. Much more frequently, Cilja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Циля | Kazakhstan, Russia, Kyrgyzstan, Belarus, Ukraine |
| Cilja | Germany, South Africa, India, Brazil, Netherlands |