All around the world, Casion (Casion 
) is a very rare unisex forename. The forename Casion is characteristic of South-eastern Asia, particularly Philippines, where it is a very rare female name. More prevalently, Casion is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Casion | South Africa, Spain, Philippines, United States, Canada |