| Yoshimasa Ishikawa 石川義正 | |
| Birth Place: | Japan |
| Nationality: | Japanese |
| Weight: | 152lb |
| Weight Class: | Lightweight |
| Style: | Shoot wrestling, Catch Wrestling, Shoot Boxing, Shooto, Submission Wrestling |
| Team: | Shooting Gym Yokohama |
| Years Active: | 1989 - 1992 |
| Mma Kowin: | 1 |
| Mma Subwin: | 1 |
| Mma Decwin: | 1 |
| Mma Otherwin: | 1 |
| Mma Koloss: | 2 |
| Mma Subloss: | 3 |
| Sherdog: | 8795 |
Yoshimasa Ishikawa is a Japanese[1] mixed martial artist.[2] 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.
|-| Win| align=center| 4-5| Tomonori Ohara| N/A| Shooto - Shooto| | align=center| 3| align=center| 0:54| Tokyo, Japan| |-| Loss| align=center| 3-5| Tomonori Ohara| TKO (broken hand)| Shooto - Shooto| | align=center| 2| align=center| 2:35| Tokyo, Japan| |-| Win| align=center| 3-4| Yasuto Sekishima| Decision (unanimous)| Shooto - Shooto| | align=center| 5| align=center| 3:00| Tokyo, Japan| |-| Loss| align=center| 2-4| Satoshi Honma| Submission (armbar)| Shooto - Shooto| | align=center| 2| align=center| 0:00| Tokyo, Japan| |-| Win| align=center| 2-3| Tomonori Ohara| Submission (guillotine choke)| Shooto - Shooto| | align=center| 4| align=center| 0:00| Tokyo, Japan| |-| Loss| align=center| 1-3| Manabu Yamada| TKO (punches)| Shooto - Shooto| | align=center| 1| align=center| 2:07| Tokyo, Japan| |-| Loss| align=center| 1-2| Yasuto Sekishima| Submission (rear-naked choke)| Shooto - Shooto| | align=center| 1| align=center| 1:49| Tokyo, Japan| |-| Loss| align=center| 1-1| Yasuto Sekishima| Submission (kimura)| Shooto - Shooto| | align=center| 1| align=center| 2:18| Tokyo, Japan| |-| Win| align=center| 1-0| Kazuhiro Kusayanagi| KO (spinning back kick)| Shooto - Shooto| | align=center| 4| align=center| 0:13| Tokyo, Japan|