Around the world, Sadaharu (오 
, Sadaharu 
) is an extremely rare boy's forename. Much more prevalently, Sadaharu is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| 오 | South Korea |
| Sadaharu | Japan, Mexico, United States, France, Brazil |
Sadaharu is also a name for the fictitious and mythical characters: .
|
kuroda sadaharu Japanese educator (b. 1863) |
|
| sadaharu yoshida (b. 1901) |
|
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| sadaharu nagano (b. 1933) |
|
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|
sadaharu yagi Japanese record producer and recording engineer, US |
|
| sadaharu uehara particle physicist at KEK in Japan |
|
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| sadaharu morinaka |
|
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| ogasawara sadaharu |
|