Fighting is an established tradition in North American ice hockey, with a long history that involves many levels of amateur and professional play and includes some notable individual fights. Fights may be fought by enforcers, or "goons" —players whose role is to fight and intimidate—on a given team, and are governed by a system of unwritten rules that players, coaches, officials, and the media refer to as "the code". Some fights are spontaneous, while others are premeditated by the participants. While officials tolerate fighting during hockey games, they impose a variety of penalties on players who engage in fights.

Enforcer is an unofficial role in ice hockey. The term is sometimes used synonymously with "fighter", "tough guy", or "goon". An enforcer's job is to deter and respond to dirty or violent play by the opposition. When such play occurs, the enforcer is expected to respond aggressively, by fighting or checking the offender. Enforcers are expected to react particularly harshly to violence against star players or goalies.