Cognomen Marta Greta (Marta Greta 
) , all around the world, is an extremely rare last name. The family name Marta Greta is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. More frequently, Marta Greta is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marta Greta | Chile |