Family name Mary Yenny (Mary Yenny 
) , worldwide, is an extremely rare last name. The surname Mary Yenny is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more prevalently, Mary Yenny is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Mary Yenny | Bolivia, Peru, Ecuador, Spain, Chile |