Surname Mrtinz (Mrtinz 
) , throughout the world, is a very rare family name. The surname Mrtinz is habitual in Latin America and the Caribbean, particularly El Salvador, where it is quite a rare surname, Colombia, where it is a very rare surname, and Venezuela, where it is an extremely rare surname. Not in comparison with a country's population, it is commonest in Latin America and the Caribbean, particularly El Salvador, Colombia, and Mexico.
| VARIANT | COUNTRY |
|---|---|
| Mrtinz | Mexico, Colombia, El Salvador, Venezuela |