The 1951 Japan Series was the championship series of Nippon Professional Baseball (NPB) for the season. The second edition of the Japan Series, it was a best-of-seven playoff that matched the Pacific League champion Nankai Hawks against the Central League champion Yomiuri Giants.
The Yomiuri Giants, who previously dominated the NPB predecessor Japanese Baseball League, won their first NPB championship in five games.
Outfielder Yuko Minamimura, who batted .563 with nine hits and four RBIs, was named Series MVP.