Mei Yamaguchi (21-16-1, 10) was born in Tokyo, Japan on February 3, 1983. At the age of 24 years on March 11, 2007, she made her professional MMA debut against Anna Saito, winning the fight via 1st-round submission.
Yamaguchi's last fight was a 3-round split decision loss to Sayako Fujita at Pancrase 340 at age 40 on December 24, 2023. She is on a 5-fight losing streak.
Some of Mei Yamaguchi's best fights have been against Tomomi Sunaba, Akiko Naito, Yukiko Seki, Miyoko Kusaka, Mina Kurobe and Satomi Takano.
Yamaguchi has 16 losses on her MMA record.
| # | Date | Opponent | Promotion | Weight | Round | Method | Result |
|---|---|---|---|---|---|---|---|
38 | Dec 24, 2023 40 years, 10 months 21-16-1 (10) | Sayako Fujita | Pancrase | AT | 3 | SD | LOSS |
37 | Apr 29, 2023 40 years, 2 months 21-15-1 (10) | Kanna Asakura | Rizin | AT | 3 | UD | LOSS |
36 | Feb 11, 2022 39 years 21-14-1 (10) | Jihin Radzuan | ONE | AT | 3 | UD | LOSS |
35 | Sep 3, 2021 38 years, 7 months 21-13-1 (10) | Julie Mezabarba | ONE | AT | 3 | UD | LOSS |
34 | Feb 28, 2020 37 years 21-12-1 (10) | Denice Zamboanga | ONE | ST | 3 | UD | LOSS |
33 | Oct 13, 2019 36 years, 8 months 21-11-1 (10) | Jenny Huang | ONE | ST | 3 | UD | WIN |
32 | May 17, 2019 36 years, 3 months 20-11-1 (10) | Laura Balin | ONE | ST | 1 | SUB | WIN Armbar |
31 | Mar 31, 2019 36 years, 1 months 19-11-1 (9) | Kseniya Lachkova | ONE | ST | 3 | SUB | WIN Armbar |
30 | Dec 7, 2018 35 years, 10 months 18-11-1 (8) | Jomary Torres | ONE | ST | 3 | UD | WIN |
29  | May 18, 2018 35 years, 3 months 17-11-1 (8) | 21 years, 10 months 8-0 (7) | ONE | AT | 5 | UD | LOSS For ONE Women's atomweight title |
28 | Nov 24, 2017 34 years, 9 months 17-10-1 (8) | Gina Iniong | ONE | AT | 3 | UD | WIN |
27 | Jun 30, 2017 34 years, 4 months 16-10-1 (8) | Jenny Huang | ONE | AT | 2 | SUB | WIN Rear-naked choke |
26 | Aug 13, 2016 33 years, 6 months 15-10-1 (7) | Istela Nunes | ONE | AT | 3 | SD | LOSS |
25 | May 6, 2016 33 years, 3 months 15-9-1 (7) | 19 years, 9 months 5-0 (5) | ONE | AT | 5 | UD | LOSS For ONE Women's atomweight title |
24 | May 31, 2015 32 years, 3 months 15-8-1 (7) | Satomi Takano | DEEP | FT | 2 | TKO | WIN Punches |
23 | May 31, 2015 32 years, 3 months 14-8-1 (6) | Mina Kurobe | DEEP | FT | 2 | UD | WIN |
22 | Feb 21, 2015 32 years 13-8-1 (6) | Miyoko Kusaka | DEEP | FT | 1 | KO | WIN Knee to the body |
21 | Dec 31, 2014 31 years, 10 months 12-8-1 (5) | Ayaka Hamasaki | DEEP | AT | 2 | UD | LOSS |
20 | May 18, 2014 31 years, 3 months 12-7-1 (5) | Yukiko Seki | DEEP | AT | 1 | CKO | WIN Rear-naked choke |
19 | Mar 29, 2014 31 years, 1 months 11-7-1 (5) | Gina Iniong | FT | 3 | SD | LOSS | |
18 | Oct 25, 2013 30 years, 8 months 11-6-1 (5) | Patricia Vidonic | FT | 3 | SD | LOSS | |
17 | May 25, 2013 30 years, 3 months 11-5-1 (5) | Seo Ye Jung | FT | 1 | SUB | WIN Armbar | |
16 | Dec 24, 2012 29 years, 10 months 10-5-1 (4) | Megumi Fujii | FT | 2 | UD | LOSS | |
15 | Jul 21, 2012 29 years, 5 months 10-4-1 (4) | Emi Tomimatsu | FT | 2 | UD | WIN | |
14 | Mar 23, 2012 29 years, 1 months 9-4-1 (4) | Katja Kankaanpää | FT | 3 | UD | LOSS | |
13 | Dec 17, 2011 28 years, 10 months 9-3-1 (4) | Mika Nagano | FT | 2 | SD | WIN | |
12  | Jul 9, 2011 28 years, 5 months 8-3-1 (4) | 24 years, 4 months 9-4 (1) | FT | 2 | UD | LOSS | |
11 | May 3, 2011 28 years, 3 months 8-2-1 (4) | Akiko Naito | Pancrase | FT | 1 | SUB | WIN Armbar |
10 | Apr 3, 2011 28 years, 2 months 7-2-1 (3) | Tomomi Sunaba | Pancrase | FT | 2 | MD | WIN |
9 | Nov 28, 2010 27 years, 9 months 6-2-1 (3) | Kyoko Takabayashi | FT | 3 | UD | DRAW Majority | |
8 | Feb 11, 2010 27 years 6-2 (3) | Yuka Tsuji | FT | 1 | SUB | WIN Rear-naked choke | |
7 | Jul 12, 2009 26 years, 5 months 5-2 (2) | Kyoko Takabayashi | FT | 3 | SD | WIN | |
6 | Apr 25, 2009 26 years, 2 months 4-2 (2) | Emi Fujino | FT | 3 | UD | WIN | |
5 | Nov 8, 2008 25 years, 9 months 3-2 (2) | Yuka Tsuji | LT | 3 | UD | LOSS | |
4 | Dec 26, 2007 24 years, 10 months 3-1 (2) | Emi Fujino | LT | 2 | SD | LOSS | |
3 | Sep 6, 2007 24 years, 7 months 3-0 (2) | Emi Tomimatsu | LT | 2 | SD | WIN | |
2 | May 19, 2007 24 years, 3 months 2-0 (2) | Saori Ishioka | LT | 2 | SUB | WIN Kneebar | |
1 | Mar 11, 2007 24 years, 1 months 1-0 (1) | Anna Saito | LT | 1 | SUB | WIN Rear-naked choke |
