Cognomen Osmanzai (Osmanzai 
) , globally, is a very rare family name. The cognomen Osmanzai is habitual in Northern America, particularly Canada, where it is a very rare surname, and the United States, where it is an extremely rare surname. Very seldom, Osmanzai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Osmanzai | Canada, United States |