Surname Octi (Octi 
) , in all the world, is a rare family name. The cognomen Octi is habitual in Indonesia, where it is a very rare surname, and China, where it is an extremely rare surname. More prevalently, Octi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Octi | Argentina, Nicaragua, United States, Indonesia, China |