Surname Osoi (Osoi 
) , in the entire world, is a rare family name. The last name Osoi is habitual in Kenya, where it is a rare surname, Malaysia, where it is a very rare surname, and China, where it is an extremely rare surname. Very seldom, Osoi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osoi | China, Malaysia, Kenya, Nigeria, United States |