Family name Gratiniano (Gratiniano 
) , in all the world, is a rare cognomen. The cognomen Gratiniano is habitual in Spain, where it is a rare surname, Venezuela, and Colombia, where it is a very rare surname. Likewise, Gratiniano is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Gratiniano | Colombia, Spain, Venezuela, Mexico, Ecuador |