Cognomen Marianao (Marianao 
) , in the entire world, is a very rare last name. The surname Marianao is habitual in Spain, where it is a very rare surname, Venezuela, where it is an extremely rare surname, and Brazil. Likewise, Marianao is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marianao | Spain, Brazil, Mexico, Ecuador, Argentina |