Last name Marnny (Marnny 
) , worldwide, is an extremely rare surname. The surname Marnny is habitual in Latin America and the Caribbean, particularly Nicaragua, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Much more prevalently, Marnny is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marnny | Peru, Philippines, Venezuela, Brazil, United States |