Surname Casinio (Casinio 
) , across the world, is a rare family name. The last name Casinio is habitual in Philippines, where it is a very rare surname, Nicaragua, and the United States, where it is an extremely rare surname. Very seldom, Casinio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Casinio | United States, Peru, Nicaragua, Philippines |