Cognomen Owiso (Owiso 
) , around the world, is quite a rare last name. The family name Owiso is habitual in Kenya, where it is quite a rare surname, Tanzania, where it is a very rare surname, and the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Owiso | Tanzania, Kenya, United States |
| charles owiso Kenyan boxer, KE (b. 1958) |
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| owiso odera SD (b. 1974) |
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