Family name Carlos Delfin (Carlos Delfin 
) , across the world, is a very rare last name. The cognomen Carlos Delfin is habitual in Chile, where it is a rare surname, and Spain, where it is a very rare surname. More frequently, Carlos Delfin is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Carlos Delfin | Philippines, Spain, Peru, Ecuador, Chile |