- Finishers and Signature Moves
- Sakuraba Lock (Kimura Lock)
- Cross Armbreaker
- "Gracie Hunter"
- "IQ Wrestler"
- Tag Teams and Stables
Championships and accomplishments
- National championship runner-up (high school)
- East Japan freshman championship
- All Japan collegiate wrestling championships (fourth place)
Mixed martial arts
- Pride Fighting Championships
- 2000 Pride Openweight Grand Prix semi-finalist
- Longest fight in Pride FC history – Pride Grand Prix 2000 Finals (90:00)
- First man to defeat Royce Gracie in MMA history
- First Japanese Athlete to defeat a Gracie since Helio Gracie's 1951 loss to Masahiko Kimura.
- Tied with Antônio Rodrigo Nogueira for the most submission wins (11) in Pride FC history
- Ultimate Fighting Championship
- UFC Hall of Fame
- UFC Japan Heavyweight Tournament winner
- First Japanese champion in UFC history
- Mixed Martial Arts Hall of Fame
- Wrestling Observer Newsletter
- Tokyo Sports
- Kingdom One Million Yen Tournament (1997)
- Nikkan Sports
- Outstanding Performance Award (1999)
- Wrestler of the Year (2000)
- Match of the Year Award (2013) vs. Shinsuke Nakamura on January 4
- Pro Wrestling Illustrated
- PWI ranked him #238 of the top 500 singles wrestlers in the PWI 500 in 2017
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