Cognomen Okusi (Okusi 
) , around the globe, is a rare surname. The cognomen Okusi is habitual in Kenya, where it is a rare surname, Nigeria, and the United Kingdom, where it is a very rare surname. In absolute terms, this name is the most popular in Kenya, Nigeria, and the United States. Likewise, Okusi is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Okusi | Spain, Nigeria, United States, United Kingdom, Kenya |
| cecilia okusi researcher (ORCID 0000-0002-5575-8527) |
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| okusi mahina Tongan philosopher at Massey University in New Zealand |
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