Family name מרטוס (Martos 
, מרטוס 
) , all over the world, is a common surname. The cognomen מרטוס is habitual in Andorra, where it is quite a common surname, Spain, and Peru, where it is quite a rare surname. In absolute terms, it is commonest in Spain, Philippines, and Peru. Also, מרטוס is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Martos | Philippines, Spain, Argentina, Brazil, Peru |
| מרטוס | Israel |