Family name Carlos Onesimo (Carlos Onesimo 
) , across the world, is an extremely rare last name. The cognomen Carlos Onesimo is characteristic of Latin America and the Caribbean, particularly Chile, where it is a very rare surname. More frequently, Carlos Onesimo is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Carlos Onesimo | Peru, Chile, Ecuador |