Family name מריוס (Marius 
, Marjus 
, Maryus ) , across the world, is a common last name. The cognomen מריוס is characteristic of Romania, where it is a common surname, Saint Lucia, where it is quite a common surname, and Martinique (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Romania, Cameroon, and Ivory Coast. More prevalently, מריוס is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marius | France, Ivory Coast, Romania, South Africa, Democratic Republic of the Congo |
| Marjus | Spain, United States, Albania, Democratic Republic of the Congo, Italy |
| Maryus | Spain, France, Romania, United States, Italy |
| מריוס | Israel |