All over the world, Otto-Wilhelm (Otto-Wilhelm 
) is a very rare boy's first name. The forename Otto-Wilhelm is habitual in Western Europe, particularly Germany, where it is a very rare masculine name. Parts of the name also exists independently as a first name Otto, and a first name Wilhelm.
| VARIANT | COUNTRY |
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| Otto-Wilhelm | Germany |
| otto-wilhelm wandesleben German police officer and SS officer, DE (b. 1912) |
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| otto-wilhelm erdmann (b. 1903) |
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| otto-wilhelm berleberg fl. 1616; Titles or roles: writing to Alsted, 1616 |
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| otto-wilhelm merten researcher |
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