| 释义 |
{{Infobox given name
| name = Sadao
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| gender = Male
| meaning = Different meanings depending on the kanji used
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| origin = Japanese
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}}Sadao (written: 貞雄, 貞夫, 禎雄 or サダオ in katakana) is a masculine Japanese given name. Notable people with the name include: - {{Nihongo|Sadao Abe|阿部 サダヲ||born 1970}}, Japanese actor and musician
- {{Nihongo|Sadao Araki|荒木 貞夫||1877–1966}}, Imperial Japanese Army general, politician, and political philosopher
- {{Nihongo|Sadao Bekku|別宮 貞雄||1922–2012}}, Japanese classical composer
- {{Nihongo|Sadao Fuchigami|渕上 貞雄||born 1937}}, Japanese politician
- {{Nihongo|Sadao Hasegawa|長谷川 サダオ||born 1950}}, Japanese gay erotic artist
- {{Nihongo|Kotogahama Sadao|琴ヶ濵 貞雄||1927–1981}}, Japanese sumo wrestler
- {{Nihongo|Sadao Munemori|旨森 貞雄||1922–1945}}, United States Army soldier and Medal of Honor recipient
- {{Nihongo|Sadao Nakajima|中島 貞夫||born 1934}}, Japanese film director and screenwriter
- {{Nihongo|Sadao Sato|佐藤 貞雄||born 1949}}, Japanese sport wrestler
- {{Nihongo|Sadao Sei|清 貞雄}}, Japanese astronomer
- {{Nihongo|Sadao Takagi|高木 貞夫||born 1932}}, Japanese entomologist
- {{Nihongo|Wakabayama Sadao|若葉山 貞雄||1922–2001}}, Japanese sumo wrestler
- {{Nihongo|Sadao Watanabe (artist)|渡辺 禎雄||1913–1996}}, Japanese printmaker
- {{Nihongo|Sadao Watanabe (musician)|渡辺 貞夫||born 1933}}, Japanese jazz musician
- {{Nihongo|Sadao Yamahana|山花 貞夫||1936–1999}}, Japanese politician
- {{Nihongo|Sadao Yamanaka|山中 貞雄||1909–1938}}, Japanese film director and screenwriter
{{given name}} 1 : Japanese masculine given names |