Cognomen Octania (Octania 
) , in the world, is a rare family name. The surname Octania is characteristic of Indonesia, where it is a rare surname, Singapore, and India, where it is an extremely rare surname. Very seldom, Octania is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Octania | South Africa, Singapore, United States, India, Indonesia |