Wrestling is the act of physical engagement between two unarmed persons, in which each wrestler strives to get an advantage over or control of their opponent. Physical techniques which embody the style of wrestling are clinching, holding, locking, and leverage.

Greco-Roman Wrestling is an international discipline and an Olympic sport. "In Greco-Roman style, it is forbidden to hold the opponent below the belt, to make trips, and to actively use the legs in the execution of any action." Recent rule changes in Greco-Roman increase opportunities for and place greater emphasis on explosive, 'high amplitude' throws. One of the most well known Greco-Roman wrestlers from the United States is Rulon Gardner.[17]

Freestyle Wrestling is an international discipline and an Olympic sport. "In free style, it is allowed to hold the legs of the opponent, to make trips and to actively use legs on the execution of any action."[18] It is thought to have originated from English catch wrestling, and is currently the international style in which women participate in competition.

Grappling Wrestling is a wrestling style also called submission wrestling or “submission grappling” which consists of controlling the opponent without using striking, in standing position or on the ground after a throw, and to make him or her abandon thanks to immobilisation techniques such as locks. Grappling plays an important role in the practice of Mixed Martial Arts (MMA) and can be used as a self-defence technique. It brings together techniques from Brazilian jiu-jitsu (no-Gi), Freestyle Wrestling, Folk American Wrestling (catch-as-catch-can), Sambo and judo.".[19] Grappling is also used to describe the skills used in mixed martial arts competitions, differing from the FILA definition. Grappling can be trained for self defense, sport and mixed martial arts (MMA) competition.

Collegiate Wrestling is the commonly used name of wrestling practiced at the college and university level in the United States. A modification of the style is practiced at the high school and middle school levels, and also for younger participants. The term is used to distinguish the styles of wrestling used in other parts of the world, and for those of the Olympic Games: Greco-Roman wrestling, and Freestyle wrestling. There are currently several organizations which oversee collegiate wrestling competition: Divisions I, II, and III, of the NCAA, NJCAA, NAIA, and the NCWA. Division I of the NCAA is considered the most prestigious and challenging level of competition. A school chooses which organization to join, although it may compete against teams from other levels and organizations during regular-season competition. The collegiate season starts in November and culminates with the NCAA tournament held in March.[23]