Surname Dennis Marcos (Dennis Marcos 
) , across the world, is an extremely rare last name. The cognomen Dennis Marcos is habitual in Latin America and the Caribbean, particularly Chile, where it is an extremely rare surname. Much more frequently, Dennis Marcos is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dennis Marcos | Brazil, Peru, Philippines, Ecuador, Chile |
Regachuelo, and Godoy Herrera