Family name Osiki (Osiki 
) , throughout the world, is a rare surname. The surname Osiki is characteristic of Nigeria, where it is a rare surname, Germany, where it is an extremely rare surname, and the United Kingdom. Not in comparison with a country's population, it is the most numerous in Nigeria, Germany, and the United States. Likewise, Osiki is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osiki | Germany, South Africa, Brazil, United States, Nigeria |