Last name Okosun (Okosun 
) , in the entire world, is a common cognomen. The last name Okosun is habitual in Nigeria, where it is quite a rare surname, Ireland, where it is a rare surname, and Ghana. In absolute terms, it most frequently occurs in Nigeria, Ghana, and the United States. Likewise, Okosun is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Okosun | Ireland, Nigeria, Ghana, United States, United Kingdom |
| sonny okosun Nigerian musician, who was known as the leader of the Ozzidi band., NG (b. 1947) |
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| john e. okosun (b. 1966) |
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| jessica okosun researcher |
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| augustine okosun college basketball player (2008–2008) Seton Hall |
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| peter okosun Film and Photograper in lagos, NG |
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| kazeem o okosun researcher |
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| joel okosun |
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| ayo simon okosun Danish association football player, DK (b. 1993) |
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