Submission wrestling (also known as submission fighting, submission grappling, sport grappling, or simply as No-Gi) or Combat wrestling (in Japan), is a formula of competition and a general term describing the aspect of martial arts and combat sports that focus on clinch and ground fighting with the aim of obtaining a submission using submission holds. The term "submission wrestling" usually refers only to the form of competition and training that does not use a "jacket", "gi," or "combat kimono," often worn with belts that establish rank by color.
The sport of submission wrestling brings together techniques from Folk Wrestling (Catch-as-catch-can), Luta Livre Esportiva, Freestyle Wrestling, Brazilian Jiu-Jitsu, Judo and Sambo. Submission fighting as an element of a larger sport setting is very common in mixed martial arts, Pankration, catch wrestling and others. Submission wrestlers or grapplers usually wear shorts, skin-sticky clothing such as Rash guards, speedos and mixed short clothes so they do not rip off in combat.
Generic term 
Mixed martial arts schools and fighters may use the term "submission wrestling" to refer to their grappling methods while avoiding association with any one art. Submission wrestling is sometimes used to describe the tactic (in mixed martial arts competition) that revolves around using submission wrestling skills to defeat an opponent.
- Brazilian Jiu-Jitsu: An increasingly popular style with great emphasis on ground grappling. It involves training with and without a Gi.
- 10th Planet Jiu-Jitsu: A non-traditional style of Brazilian Jiu-Jitsu developed by Eddie Bravo.
- Catch Wrestling: Also called "Catch-As-Catch-Can", the style of submission wrestling (without the gi) originating in Northern England has experienced a resurgence during recent years.
- FILA Grappling: a style recently formulated and sponsored by FILA.
- Judo: A Japanese martial art focusing on high impact throws, pins, armlocks, and chokes. It is also an Olympic sport, and is practiced with the gi but has sometimes been adapted to submission wrestling purposes.
- Jiu Jitsu: An ancient art of Japanese wrestling/grappling that places a heavy emphasis on joint-locks, chokes and throws. Uses a gi traditionally but training without one is not un-common.
- Malla-yuddha: One of the oldest practiced forms of submission/combat-wrestling, originating in pre-partition India Malla-yuddha is divided into four parent techniques, each named after particular Hindu gods and legendary fighters: Hanumanti concentrates on technical annd positional superiority , Jambuvanti uses locks and holds to force the opponent into submission, Jarasandhi concentrates on breaking the limbs and joints and applying tracheal chokes while Bhimaseni focuses on sheer strength .
- Luta livre esportiva (pt): A form of grappling native to Brazil without the gi.
- Pankration: Originating from ancient Greece, it combines elements which today are found mainly in the punches of boxing (pygmachia) and in the kicking of many martial arts (laktisma) with moves from the also Greece-originating wrestling (pale) and joint locks, thus creating a broad fighting sport similar to today's mixed martial arts.
- Sambo: The Russian style of grappling that typically uses a jacket, but without gi pants. Sambo utilizes leglocks, but most styles do not permit chokes.
- Shoot wrestling: A Japanese martial art (without the gi) based on freestyle wrestling, Greco-Roman wrestling, Sambo, and catch wrestling, which later incorporated karate, Muay Thai, and Judo. The two major sub-disciplines of shoot wrestling are Shooto and Shootfighting.
- Shooto: A Japanese martial art consisting of catch wrestling, Judo, jujutsu, Sambo, and Kickboxing.
- Combat Submission Wrestling (CSW): A modern form of wrestling (and MMA System) without the gi that borrows elements and techniques from catch wrestling, freestyle wrestling, Greco-Roman wrestling, shoot wrestling, judo, and Sambo. This style also has a system of striking.
- Shootfighting: A Japanese martial art consisting of Muay Thai and Catch Wrestling.
- Submission Arts Wrestling (SAW): Submission Wrestling style created by Hidetaka Aso.
- Hayastan Freestyle Fighting A submission grappling style developed by Gokor Chivichyan and Gene Lebell that blends elements of Judo, Sambo, Catch Wrestling, Greco-Roman and Freestyle wrestling.
Grappling Tournaments and Organizations 
- British Grappling
- ADCC Submission Wrestling World Championship
- International Federation of Associated Wrestling Styles
- Grapplers Quest