Family name អូស្មាន (អូស្មាន 
) , across the world, is a rare cognomen. The surname អូស្មាន is habitual in South-eastern Asia, particularly Cambodia, where it is quite a rare surname. Likewise, អូស្មាន is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| អូស្មាន | Cambodia |