Sadaharu Oh (Japanese: 王貞治, Ō Sadaharu; born May 20, 1940), also known as Wang Chen-chih (Chinese: 王貞治; pinyin: Wáng Zhēnzhì), is a retired Chinese baseball player and manager in Japan. Oh holds the world lifetime home run record, having hit 868 home runs during his professional career. He established many NPB batting records, including runs batted in (RBIs) (2,170), slugging percentage (.634), bases on balls (2,390), and on-base plus slugging percentage (OPS) (1.080).
In 1977, Oh became the first recipient of the People's Honour Award. He was inducted into the Japanese Baseball Hall of Fame in 1994. He won 11 Japan Series championships and was named the Central League's Most Valuable Player nine times—in addition to holding the world career home run record.
Oh was born in Sumida, Tokyo, the son of a Japanese mother and a Chinese father from Zhejiang. Although born in Japan, Oh holds the citizenship of the Republic of China, as his father had left China when the ROC governed the mainland and chose to remain a Chinese citizen.