Katsuya Toida
, is a Japanese mixed martial artist. He competed in the Bantamweight and Featherweight divisions. His real name is . He is known for his judo and shoot wrestling expertise.

Mixed martial arts record

|-
| Loss
| align=center| 13-13-3 (1)
| Seiji Akao
| Decision (unanimous)
| Deep: 62 Impact
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 13-12-3 (1)
| Hiroyuki Kobayashi
| Decision (unanimous)
| Deep: Cage Impact 2012 in Tokyo: 1st Round
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Loss
| align=center| 12-12-3 (1)
| Makoto Kamaya
| TKO (punches)
| Deep: 57 Impact
| 
| align=center| 1
| align=center| 1:13
| Tokyo, Japan
| 
|-
| Loss
| align=center| 12-11-3 (1)
| Kazunori Yokota
| TKO (soccer kicks and punches)
| Deep: Cage Impact 2011 in Tokyo, 1st Round
| 
| align=center| 2
| align=center| 0:25
| Tokyo, Japan
| 
|-
| Loss
| align=center| 12-10-3 (1)
| Issei Tamura
| KO (punches)
| Shooto: Gig Tokyo 7
| 
| align=center| 1
| align=center| 1:23
| Tokyo, Japan
| 
|-
| NC
| align=center| 12-9-3 (1)
| Shigeki Osawa
| NC (accidental kicks to the groin)
| World Victory Road Presents: Sengoku Raiden Championships 13
| 
| align=center| 3
| align=center| 1:35
| Tokyo, Japan
| 
|-
| Win
| align=center| 12-9-3
| Yusuke Yachi
| DQ (illegal upkick)
| Shooto: The Way of Shooto 2: Like a Tiger, Like a Dragon
| 
| align=center| 1
| align=center| 3:45
| Tokyo, Japan
| 
|-
| Win
| align=center| 11-9-3
| Wataru Takahashi
| Submission (rear-naked choke)
| GCM: Cage Force 14
| 
| align=center| 2
| align=center| 0:28
| Tokyo, Japan
| 
|-
| Loss
| align=center| 10-9-3
| Tetsu Suzuki
| TKO (punches)
| GCM: Cage Force 7
| 
| align=center| 1
| align=center| 0:16
| Tokyo, Japan
| 
|-
| Loss
| align=center| 10-8-3
| Hatsu Hioki
| Submission (armbar)
| Shooto: Back To Our Roots 7
| 
| align=center| 2
| align=center| 4:30
| Tokyo, Japan
| 
|-
| Loss
| align=center| 10-7-3
| Takeshi Inoue
| Decision (unanimous)
| Shooto: Back To Our Roots 6
| 
| align=center| 3
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 10-6-3
| Gustavo Franca
| Decision (unanimous)
| Heat: Heat 4
| 
| align=center| 3
| align=center| 5:00
| Nagoya, Aichi, Japan
| 
|-
| Draw
| align=center| 9-6-3
| Adrian Pang
| Draw
| WR 9: Warriors Realm 9
| 
| align=center| 3
| align=center| 5:00
| Australia
| 
|-
| Draw
| align=center| 9-6-2
| Tenkei Oda
| Draw
| Shooto: 11/10 in Korakuen Hall
| 
| align=center| 3
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Loss
| align=center| 9-6-1
| Atsushi Yamamoto
| Decision (unanimous)
| K-1: Hero's 3
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 9-5-1
| Makoto Ishikawa
| Submission (rear naked choke)
| Shooto 2005: 7/30 in Korakuen Hall
| 
| align=center| 2
| align=center| 4:09
| Tokyo, Japan
| 
|-
| Draw
| align=center| 8-5-1
| Atsushi Yamamoto
| Draw
| GCM: D.O.G. 1
| 
| align=center| 3
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Loss
| align=center| 8-5
| Rumina Sato
| KO (punch)
| Shooto: Year End Show 2004
| 
| align=center| 2
| align=center| 1:21
| Tokyo, Japan
| 
|-
| Win
| align=center| 8-4
| Jin Kazeta
| Submission (armbar)
| Shooto 2004: 4/16 in Kitazawa Town Hall
| 
| align=center| 2
| align=center| 4:19
| Setagaya, Tokyo, Japan
| 
|-
| Loss
| align=center| 7-4
| Naoya Uematsu
| Submission (achilles lock)
| Shooto: Wanna Shooto 2003
| 
| align=center| 1
| align=center| 4:06
| Tokyo, Japan
| 
|-
| Win
| align=center| 7-3
| Rami Boukai
| Decision (majority)
| Shooto: 1/24 in Korakuen Hall
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Loss
| align=center| 6-3
| Alexandre Franca Nogueira
| Decision (unanimous)
| Shooto: To The Top Final Act
| 
| align=center| 3
| align=center| 5:00
| Urayasu, Chiba, Japan
| 
|-
| Win
| align=center| 6-2
| Baret Yoshida
| Decision (majority)
| Shooto: To The Top 6
| 
| align=center| 3
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 5-2
| Osmar Diaz Fernandez
| Technical Submission (armbar)
| Shooto: To The Top 4
| 
| align=center| 1
| align=center| 0:37
| Tokyo, Japan
| 
|-
| Win
| align=center| 4-2
| Hisao Ikeda
| Decision (unanimous)
| Shooto: To The Top 1
| 
| align=center| 3
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 3-2
| Hiroshi Umemura
| Submission (armbar)
| Shooto: R.E.A.D. 12
| 
| align=center| 1
| align=center| 2:07
| Tokyo, Japan
| 
|-
| Win
| align=center| 2-2
| Takeru Ueno
| Decision (unanimous)
| Shooto: R.E.A.D. 7
| 
| align=center| 2
| align=center| 5:00
| Setagaya, Tokyo, Japan
| 
|-
| Loss
| align=center| 1-2
| Kazuhiro Inoue
| Decision (majority)
| Shooto: R.E.A.D. 5
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Win
| align=center| 1-1
| Tetsuo Katsuta
| Decision (unanimous)
| Shooto: Gig '99
| 
| align=center| 2
| align=center| 5:00
| Tokyo, Japan
| 
|-
| Loss
| align=center| 0-1
| Naoya Uematsu
| Submission (armbar)
| Shooto: Shooter's Dream
| 
| align=center| 1
| align=center| 2:46
| Setagaya, Tokyo, Japan
|

Submission grappling record
KO PUNCHES
|- style="text-align:center; background:#f0f0f0;"
| style="border-style:none none solid solid; "|Result
| style="border-style:none none solid solid; "|Opponent
| style="border-style:none none solid solid; "|Method
| style="border-style:none none solid solid; "|Event
| style="border-style:none none solid solid; "|Date
| style="border-style:none none solid solid; "|Round
| style="border-style:none none solid solid; "|Time
| style="border-style:none none solid solid; "|Notes
|-
|Loss|| Baret Yoshida || Sumission (rear naked choke) || Gi Grappling 2005|| 2004|| || ||
|-
|Draw|| Takumi Yano || Decision (unanimous) || CAND || 2004|| || ||
|-
|Loss|| Koji Komuro || Submission (sode guruma jime) || THE CONTENDERS 8 || 2003|| || ||
|-
|Loss|| Baret Yoshida || Decision (unanimous) || THE CONTENDERS Millennium-1 || 2001|| || ||
|-
|Win|| Takumi Yano || Decision (unanimous) || THE CONTENDERS Millennium-1 || 2001|| || ||
|-