This is a list of WBC Muaythai diamond champions, showing diamond champions certificated by the World Boxing Council Muaythai (WBC Muaythai). The WBC, which is one of the four major governing bodies in professional boxing, started certifying their own Muay Thai world champions in 19 different weight classes in 2005.
| No. | Name | Date winning | Date losing | Days | Defenses |
|---|---|---|---|---|---|
| 1 |  Phetmorakot Petchyindee Academy | October 4, 2019 | July 2021 | 1308 | 0 |
Phetmorakot defeated Mohammad Siasarani ( Iran) by KO (Knee to body) at 3R in Chiang Rai, Thailand. [1] | |||||
| 2 |  Youssef Boughanem | July 17, 2021 | Current | 656 | 0 |
Boughanem defeated Niclas Larsen ( Denmark) by DEC (Unanimous) at 5R in Brussels, Belgium. | |||||
| No. | Name | Date winning | Date losing | Days | Defenses |
|---|---|---|---|---|---|
| 1 | Buakaw Banchamek | August 15, 2014 | Current | 3184 | 0 |
Buakaw defeated Abdoul Karim Touré ( France) by TKO (Referee stoppage: Right elbow strike) at 3R at Chiang Mai Rajabhat University in Chiang Mai Province, Thailand. [2] [3] [4] | |||||
| No. | Name | Date winning | Date losing | Days | Defenses |
|---|---|---|---|---|---|
| 1 | Saenchai PKSaenchaimuaythaigym | August 14, 2011 | Current | 4281 | 0 |
| 2 | Singdam Kiatmuu9 | July 27, 2019 | Current | 1377 | 0 |
Saenchai defeated Kevin Ross ( USA) by majority decision(48-46/48-46/47-47) after 5R at Commerce Casino in Los Angeles, California, United States. This bout was also for the vacant title of MTAA world Super lightweight. [5] [6] [7] | |||||
| No. | Name | Date winning | Date losing | Days | Defenses |
|---|---|---|---|---|---|
| 1 |  Ruth Ashdown | August 15, 2018 | Retired with title | Retired after winning | 0 |
| Ashdown defeated Dokmaipa Kiatpompetch ( Thailand) by Decision (Unanimous) at 5R in Hong Kong, China. [8] | |||||
Malaipet is a Thai professional Muay Thai fighter, kickboxer and former mixed martial artist. He is a former Rajadamnern Stadium Champion who currently resides in Fresno, California. In MMA, Malaipet has fought for EliteXC, King of the Cage and in kickboxing he has competed for K-1, SLAMM!! Events, Bellator Kickboxing and Thai & Kickbox SuperLeague.
Kevin "The Soul Assassin" Ross is an American retired Muay Thai fighter and former mixed martial artist. He is also a former Bellator Kickboxing Featherweight champion. Among Kevin’s achievements so far are the Super light weight WBC International championship Title, the Welterweight WBC USA National championship Title, the FIDAM Welterweight championship of Mexico and the United States Muay Thai Federation Welterweight champion. He currently trains at Combat Sports Academy in Dublin, California.
Oléna "Lena" Serhíyivna Ovchýnnikova is a Ukrainian kickboxer and mixed martial artist who competes in the featherweight division in kickboxing and the flyweight division in MMA.
Saeksan Or. Kwanmuang is a Thai Muay Thai fighter, originally from Nakhon Si Thammarat in the South of Thailand.
Jeri Sitzes is an American boxer, kickboxer and Muay Thai fighter. She is a former WBC Muaythai Super Bantamweight champion and the former NABF Featherweight champion. She started her professional combat career as a boxer with 15 wins, 10 defeats and 1 draw.
Jonathan Haggerty is a British Muay Thai fighter currently signed with ONE Championship. He is the reigning ONE Bantamweight Muay Thai World Champion and former ONE Flyweight Muay Thai World Champion. As of April 22, 2023, he is the champion in the ONE Bantamweight Muay Thai rankings.
Petchdam Petchyindee Academy, is a Thai Muay Thai fighter. Petchdam is a former ONE Flyweight Kickboxing World Champion. He is also a former Lumpinee Stadium bantamweight champion, Thailand bantamweight champion, Toyota Marathon featherweight champion, and WBC Muaythai world featherweight champion.
Kaimukkao is a Thai Muay Thai fighter.
Ruth Ashdown is an English retired muay thai fighter who competed professionally from 2007 to 2018. She is the former WBC Muaythai world flyweight and super-bantamweight champion, as well as the former WBC Muaythai International and Diamond champion. She is one of just five diamond belt holders in the world.
Grace Spicer is an English kickboxer and Nak Muay. She is the IKF World Flyweight champion, is the WBC Muaythai International and British Super Flyweight champion, and has challenged for the WBC Muaythai World Super Flyweight title.
Darren Rolland is a French Muay Thai fighter who has been competing professionally since 2017. He is the current World Boxing Council Muaythai World Featherweight and former WBC Muaythai International Featherweight champion.
Sean Clancy is an Irish Muay thai kickboxer and the reigning WBC Muaythai Super Lightweight World Champion.
Bobo Sacko is a French Muay Thai fighter, who has been professionally competing since 2010. He is the current WMC Welterweight World champion.