Family name Marco Demetrio (Marco Demetrio 
) , in all the world, is an extremely rare last name. The family name Marco Demetrio is characteristic of Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. More frequently, Marco Demetrio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Marco Demetrio | Chile, Ecuador |