Family name Момчилович (Момчилович 
, Momchilovich 
, Momčilović 
) , around the world, is quite a rare cognomen. The surname Момчилович is characteristic of Serbia, where it is quite a common surname, Croatia, and Russia, where it is a very rare surname. In absolute terms, this name is the most popular in Serbia, Croatia, and the United States.
| VARIANT | COUNTRY |
|---|---|
| Момчилович | Russia, Ukraine |
| Momchilovich | United States |
| Momčilović | Serbia, Croatia, United States |