Cognomen Osan (Osan 
, Осан 
) , all over the world, is quite a rare surname. The last name Osan is habitual in Romania, where it is quite a rare surname, Somalia, and Argentina. In absolute terms, it most frequently occurs in Romania, Argentina, and Turkey. Likewise, Osan is the forename as well as the last name.
| remus mihai osan Ph.D. University of Pittsburgh 2002 |
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| jonathan osan Argentine footballer, AR (b. 1996) |
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