Family name Montoja (Montoja 
, Монтоя 
) , in the entire world, is a very rare last name. The cognomen Montoja is characteristic of Brazil, where it is an extremely rare surname, Russia, and Ukraine. Also, Montoja is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Montoja | Italy, Spain, Mexico, United States, Brazil |
| Монтоя | Russia, Ukraine |