Yoshimasa Ishikawa (Japanese: 石川義正) is a Japanese mixed martial artist. He competed in the Lightweight division. He was Shooto's second middleweight champion, defeating Yasuto Sekishima. Ishikawa vacated the title in 1991 to compete as a lightweight. He was a trainer for Shooting Gym Yokohama. After retirement, he later opened his own school under the name Mixed Martial Arts Shooshindo.