About Caol Uno
Born 1975. Caol Uno is a Japanese mixed martial arts fighter and professional wrestler.
(born May 8, 1975) is a Japanese mixed martial artist and professional wrestler. He is the Co-Champion of the UFC 41 Lightweight Tournament and a former Shooto Lightweight Champion. As one of the early Ultimate Fighting Championship's elite Lightweight competitors, Uno competed for the UFC Lightweight Championship on two occasions. Despite falling short in both championship bouts; losing a five-round decision against Jens Pulver at UFC 30, to determine the inaugural UFC Lightweight Champion as well as a draw against B.J. Penn at UFC 41 (in a bout which would have determined the new UFC Lightweight Champion and UFC 41 Lightweight Tournament Winner), Uno is acknowledged as a pioneer for his impact and influence during the early era of the UFC Lightweight Division.
Mixed martial arts career
Early career Uno finished second in the All Japan amateur Shooto tournament in 1996. He was a runner-up in the submission wrestling world championships at ADCC losing in the finals to world-renowned Jean Jacques Machado.
Shooto Uno rose through the ranks of the Shooto mixed martial arts organization in Japan. In May 1999, Uno fought the then-legendary Rumina Sato. The fight was hailed as "Fight of the Year", an extremely fast-paced back and forth battle with a wide variety of stand-up and grappling exchanges. Eventually, Uno took the back of Sato and choked him into submission.
The two rematched in December 2000. This fight concluded with Uno standing over Sato on his back, then striking him with a knee and a punch while he was getting up, knocking him out.
UFC After his second victory over Rumina Sato, Uno was recruited to fight for the UFC's Bantamweight (later renamed Lightweight) title against Jens Pulver. Throughout the fight, Pulver stopped Uno's takedown attempts and pressed the action on the feet. Uno, who had earned a reputation as being "unflappable", began to show frustration for the first time in his career as Pulver neutralized all his offensive efforts. Pulver took a majority decision win in the fight.
After Pulver left the UFC, the Lightweight Championship was vacated. A tournament was put together pitting the top Lightweights in the UFC (B.J. Penn, Din Thomas, Matt Serra and Caol Uno). In the first round, Uno faced Thomas. Thomas dominated the first round, setting a high pace. However, Uno turned things around, taking the second and third rounds to win the fight.
In the finals of the tournament, Uno faced Penn (who had previously defeated Uno by knockout in under 12 seconds). Uno used angles and effective wrestling techniques to frustrate Penn, who appeared tentative from the start, while Penn was dominant in spurts. The fight was called a draw and neither fighter won the championship belt.
Return to Japan Uno then went on to fight Tatsuya Kawajiri in Shooto before fighting at K-1's 2004 Premium Dynamite!! and K-1 MAX: Japan Grand Prix 2005. His next eleven fights were for the then newly established promotion Hero's.
Uno next competed in DREAM's Lightweight Grand Prix. He was seeded directly into the second round, DREAM 3, where he beat Mitsuhiro Ishida via rear-naked choke submission to progress to the Dream 5: Lightweight Grand Prix 2008 Final Round. At Dream 5, Uno lost a unanimous decision to Shinya Aoki.
UFC return Uno was spotted in attendance at UFC 94, fueling talk of a return to the UFC's Lightweight division. It was later confirmed that Uno had signed with the UFC and would face Spencer Fisher at UFC 99: The Comeback. In spite of finishing the bout pounding Fisher with punches from top crucifix position, Uno lost by a controversial unanimous decision. Then, on November 21, 2009, Uno fought UFC newcomer Fabrício Camões to a majority draw at UFC 106.
On March 31, 2010, Uno fought Gleison Tibau at UFC Fight Night 21. He was overpowered by the much bigger Tibau, and suffered a loss via TKO (punches). After the fight he was released from the promotion.
Post-UFC career After parting ways with the UFC, the fighter's trajectory in the Japanese MMA circuit was marked by a diverse range of outcomes. Following his featherweight debut in Dynamite!! 2010, where he faced a unanimous decision loss against Kazuyuki Miyata, he rebounded with a victory over Akiyo Nishiura at Dream: Fight for Japan! in May 2011. However, a notable setback occurred in September 2011 when he suffered a knockout defeat due to a head kick from Takeshi Inoue at DREAM 17.
Undeterred, he demonstrated resilience in subsequent matches, securing wins via submission over opponents such as Kyu Hwa Kim, Anthony Avila, and Daniel Romero in 2013. The trend continued with victories against Jesse Brock, Taiki Tsuchiya, and Raja Shippen in 2014. Despite facing challenges and a decision loss to Yoshifumi Nakamura in January 2015, he rebounded with a submission win against Jung Ho Hwang in April 2016.
The fighter continued to navigate the competitive landscape, experiencing both victories and defeats. Notable moments include a submission win over Markus Held in November 2019 and a KO loss to Taison Naito in May 2021. The journey reached its recent chapter with decision losses to Akira Haraguchi in November 2021 and a knockout defeat to Shota Takagi at Shooto 2023 Vol.7 in November 2023.
Professional wrestling career Uno debuted in professional wrestling in December 2000 as part of the Inoki Bom-Ba-Ye event. He teamed up with Akira Shoji against The Great Sasuke and Daijiro Matsui, but his team lost when Sasuke pinned him.
All Japan Pro Wrestling (2002–2003) Uno then signed up with All Japan Pro Wrestling in June 2002, where he debuted as a partner for Kendo Kashin against Kaz Hayashi and Kashin's double Mr. Problem (played again by Matsui), albeit in another losing effort. In November, he became also part of the event Wrestle-1, co-promoted with K-1. Coming under a monkey mask (which he quickly lost) and the name "The Apeman Nigo", Uno teamed up with Kashin to defeat La Parka and Super Parka.
He returned to AJPW in May 2003 under his Apeman Nigo persona. He and Kaz Hayashi lost to Kashin and Low Ki, but at the next event he teamed up with Ki to beat Gran Naniwa and Ryuji Hijikata. At the next day, he competed under his true name with Keiji Mutoh, winning over 728% Machine and The Apeman 200%, and then recovered his Nigo mask to team with Mutoh and Taka Michinoku in a winning effort against The Great Sasuke, The Great Kosuke and The Apeman. Uno's last appearance for AJPW would be in July, allying with Kashin and Robbie Brookside to beat Hayashi, Jimmy Yang and Ebessan.
Championships and accomplishments
Mixed martial arts All Japan Amateur Shooto All Japan Amateur Shooto Tournament Runner-up (1996) Ultimate Fighting Championship UFC 41 Lightweight Tournament Co-Champion (drew with B.J. Penn in the finale) Shooto Shooto Lightweight Championship (One Time) One successful title defense vs. Rumina Sato K-1 Hero's 2007 K-1 HERO'S Lightweight Tournament Semifinalist 2006 K-1 HERO'S Lightweight Tournament Runner Up 2005 K-1 HERO'S Lightweight Tournament Semifinalist DREAM 2008 DREAM Lightweight Grand Prix Semifinalist
Submission wrestling ADCC Submission Wrestling World Championship ADCC Submission Wrestling World Championship Silver Medalist 66k-76k (1999)
Mixed martial arts record Loss
Yoshihiro Koyama Decision (unanimous) Lemino Shooto Vol.7
Tokyo, Japan Win
Akihiko Mori Decision (unanimous) Shooto Torao 37
Yamaguchi, Japan Loss
Shota Takagi KO (knee and punches) Shooto 2023 Vol.7
Tokyo, Japan Loss
Akira Haraguchi Decision (unanimous) Vale Tudo Japan 2021
Tokyo, Japan Loss
Taison Naito KO (punch) Shooto 2021 Vol. 3
Tokyo, Japan Win
Markus Held Submission (rear-naked choke) Shooto: 30th Anniversary Tour 8th Round
Tokyo, Japan Loss
Duane van Helvoirt Decision (unanimous) Shooto: 30th Anniversary Tour 3rd and 4th Round
Tokyo, Japan Loss
Yutaka Saito Decision (unanimous) Shooto 4/23
Urayasu, Japan Win
Hwang Jung-ho Submission (rear-naked choke) Shooto-Mobstyles Presents: Fight and Mosh
Urayasu, Japan Loss
Shigeki Osawa TKO (punches) Shooto 7/26
Tokyo, Japan Loss
Yoshifumi Nakamura Decision (unanimous) Shooto: 1st Round 2015
Tokyo, Japan Win
Raja Shippen Submission (rear-naked choke) Vale Tudo Japan 6th
Tokyo, Japan Win
Taiki Tsuchiya Decision (unanimous) Shooto: 4th Round 2014
Tokyo, Japan Win
Jesse Brock Decision (unanimous) Vale Tudo Japan 4th
Tokyo, Japan Win
Daniel Romero Submission (inverted triangle choke) Vale Tudo Japan 3rd
Tokyo, Japan Win
Anthony Avila Submission (rear-naked choke) Vale Tudo Japan 2nd
Tokyo, Japan Win
Kim Kyu-hwa Submission (rear-naked choke) Shooto: 2nd Round 2013
Tokyo, Japan Loss
Shintaro Ishiwatari Decision (unanimous) Shooto: 10th Round
Tokyo, Japan Loss
Takeshi Inoue KO (head kick) Dream 17
Saitama, Japan Win
Akiyo Nishiura Decision (unanimous) Dream: Fight For Japan!
Saitama, Japan Loss
Kazuyuki Miyata Decision (unanimous) Dynamite!! 2010
Saitama, Japan Loss
Gleison Tibau TKO (punches) UFC Fight Night: Florian vs. Gomi
Charlotte, North Carolina, United States Draw
Fabrício Camões Draw (majority) UFC 106
Las Vegas, Nevada, United States Loss
Spencer Fisher Decision (unanimous) UFC 99
Cologne, Germany Loss
Shinya Aoki Decision (unanimous) Dream 5
Osaka, Japan Win
Mitsuhiro Ishida Submission (rear-naked choke) Dream 3
Saitama, Japan Loss
Andre Amade Decision (unanimous) Hero's 10
Yokohama, Japan Win
Katsuhiko Nagata Decision (unanimous) Hero's 9
Yokohama, Japan Win
Ali Abdelaziz Submission (armbar) Hero's 8
Nagoya, Japan Loss
Gesias Cavalcante Decision (majority)
Win
Ivan Menjivar Decision (unanimous)
Win
Kultar Gill Submission (rear-naked choke) Hero's 6
Tokyo, Japan Win
Ole Laursen Submission (rear-naked choke) Hero's 5
Tokyo, Japan Win
Rich Clementi Decision (unanimous) Hero's 4
Tokyo, Japan Loss
Norifumi Yamamoto TKO (doctor stoppage) Hero's 3
Tokyo, Japan Win
Hideo Tokoro Decision (unanimous) Hero's 3
Tokyo, Japan Loss
Joachim Hansen KO (knee) Hero's 1
Saitama, Japan Win
Serkan Yılmaz Submission (armbar) K-1 MAX: Japan Grand Prix 2005
Tokyo, Japan Win
Chandet Sorpantrey Submission (rear-naked choke) K-1 Premium 2004 Dynamite!!
Osaka, Japan Draw
Tatsuya Kawajiri Draw (majority) Shooto: 3/22 in Korakuen Hall
Tokyo, Japan Loss
Hermes França KO (punch) UFC 44
Las Vegas, Nevada, United States Draw
B.J. Penn Draw (split) UFC 41
Atlantic City, New Jersey, United States Win
Din Thomas Decision (unanimous) UFC 39
Uncasville, Connecticut, United States Win
Yves Edwards Decision (unanimous) UFC 37
Bossier City, Louisiana, United States Loss
B.J. Penn KO (punches) UFC 34
Las Vegas, Nevada, United States Win
Fabiano Iha TKO (punches) UFC 32
East Rutherford, New Jersey, United States Loss
Jens Pulver Decision (unanimous) UFC 30
Atlantic City, New Jersey, United States Win
Rumina Sato KO (punch) Shooto: R.E.A.D. Final
Urayasu, Japan Loss
Marcio Ramos Barbosa Technical Submission (guillotine choke) Shooto: R.E.A.D. 9
Yokohama, Japan Win
Dennis Hallman Decision (unanimous) Shooto: R.E.A.D. 3
Osaka, Japan Draw
André Pederneiras Draw Vale Tudo Japan 1999
Tokyo, Japan Win
Din Thomas Submission (rear-naked choke) Shooto: Renaxis 4
Tokyo, Japan Win
Rumina Sato Submission (rear-naked choke) Shooto: 10th Anniversary Event
Yokohama, Japan Win
Ricardo Botelho TKO (submission to punches) Vale Tudo Japan 1998
Tokyo, Japan Win
Zvonko Jakovcevic Submission (triangle choke) Shooto: Las Grandes Viajes 4
Tokyo, Japan Win
Ian James Schaffa Technical Submission (armbar) Shooto: Las Grandes Viajes 3
Tokyo, Japan Win
Yuji Fujita Decision (unanimous) Shooto: Las Grandes Viajes 2
Tokyo, Japan Loss
Naoya Uematsu Submission (Achilles lock)
Win
Hiroki Kotani Decision (unanimous)
Win
Masahito Wachi Decision (unanimous)
Draw
Takuya Kuwabara Draw (split) Shooto: Reconquista 4
Tokyo, Japan Win
Yuzo Tateishi Submission (rear-naked choke) Shooto: Gig
Tokyo, Japan Win
Patrick Tapels Submission (rear-naked choke) Japan Extreme Challenge Vale Tudo Open
Tokyo, Japan Loss
Hayato Sakurai Submission (armbar) Shooto: Let's Get Lost
Tokyo, Japan Submission grappling record KO PUNCHES Result Opponent Method Event Date Round Time
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Important facts
People in Caol Uno's life
Named in this biography and alive at the same time
Contemporaries
People whose lives overlapped Caol Uno's
Frequently asked questions
Who is Caol Uno?
Japanese mixed martial artist
When was Caol Uno born?
Caol Uno was born on 8 May 1975 in Yokosuka.
What is Caol Uno's occupation?
Caol Uno is a mixed martial arts fighter and professional wrestler.
What nationality is Caol Uno?
Caol Uno is Japanese.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Caol Uno. https://biography.guide/caol-uno/
MLA: "Caol Uno." Biography.guide, https://biography.guide/caol-uno/.
Chicago: "Caol Uno." Biography.guide. https://biography.guide/caol-uno/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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