Family name Duloc (Duloc 
) , in the world, is a very rare cognomen. The last name Duloc is characteristic of Philippines, where it is a very rare surname, Argentina, and France, where it is an extremely rare surname. In absolute terms, it is the most numerous in Philippines, Argentina, and the United States. Very seldom, Duloc is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Duloc | Philippines, United States, India, Argentina, France |