Sadaharu

Sadaharu (written: 貞治) is a masculine Japanese given name. Notable people with the name include:

• Sadaharu Aoki (青木 定治, born 1968), Japanese Pastry chef with boutique in Paris
• Sadaharu Oh (王貞治, born 1940), Japanese-Taiwanese baseball player and manager
• Sadaharu Tanikawa (谷川 貞治, born 1961), Japanese journalist
• Sadaharu Yagi, Japanese-born record producer, mixing engineer and recording engineer