Shinji Mizushima (水島 新司, Mizushima Shinji, April 10, 1939 – January 10, 2022) was a Japanese manga artist. He is best known for several baseball manga, such as Yakyū-kyō no Uta, Dokaben, and Abu-san. He is a two-time recipient of the Shogakukan Manga Award. His works have been collected into more than 540 tankōbon volumes, making him one of the most prolific manga artists of all time.