Sadao (given name)
Sadao is a masculine Japanese given name. Notable people with the name include:
- Sadao Abe, Japanese actor and musician
- Sadao Araki, Imperial Japanese Army general, politician, and political philosopher
- Sadao Bekku, Japanese classical composer
- Sadao Fuchigami, Japanese politician
- Sadao Hasegawa, Japanese gay erotic artist
- Sadao Kazama, Japanese sport wrestler
- Kotogahama Sadao, Japanese sumo wrestler
- Sadao Munemori, United States Army soldier and Medal of Honor recipient
- Sadao Nakajima, Japanese film director and screenwriter
- Sadao Sato, Japanese sport wrestler
- Sadao Sei, Japanese astronomer
- Sadao Takagi, Japanese entomologist
- Wakabayama Sadao, Japanese sumo wrestler
- Sadao Watanabe, Japanese printmaker
- Sadao Watanabe, Japanese jazz musician
- Sadao Yamahana, Japanese politician
- Sadao Yamanaka, Japanese film director and screenwriter
