Cognomen Alcasio (Alcasio 
) , in the world, is a rare surname. The surname Alcasio is habitual in Mexico, where it is a very rare surname, Philippines, where it is an extremely rare surname, and the United States. Very seldom, Alcasio is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Alcasio | Philippines, Mexico, United States, Brazil |