Last name Okoshi (大越 
, Okoshi 
) , in the world, is a rare cognomen. The cognomen Okoshi is characteristic of Hong Kong, where it is a rare surname, Japan, where it is a very rare surname, and Brazil. Measured by absolute frequency, it is the most numerous in Japan, Brazil, and Nigeria. Likewise, Okoshi is the forename as well as the last name.
| eugenia sumiye okoshi American painter, 1929-2008, US (b. 1921) |
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| katashi okoshi researcher |
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| marina p okoshi researcher ORCID ID = 0000-0001-7728-4505 |
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| kae okoshi researcher |
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| izumi okoshi badminton player, JP (b. 1980) |
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| tadashi okoshi researcher |
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| masaki okoshi researcher |
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