A professional wrestling feud is a staged disagreement between two wrestlers or factions of wrestlers over a purported slight or insult. It becomes part of the storyline that is ongoing, in televised matches in particular. Feuds may be protracted and last for months or even years or resolved with implausible speed, perhaps during the course of a single long match. Feuds are often the result of the friction that is created between faces (the heroic figures) and heels (the malevolent, 'evil' participants). Some of the more popular feuds with audiences involve pitting former allies, particularly tag-team partners, against each other.

See also: professional wrestling slang