Cognomen Monteroo (Monteroo 
) , all over the world, is a very rare family name. The surname Monteroo is habitual in Latin America and the Caribbean, particularly the Dominican Republic, where it is a rare surname, Colombia, where it is a very rare surname, and Mexico, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Monteroo | Dominican Republic, Mexico, Colombia, Argentina |