Clinch fighting is the part of stand-up fighting where the combatants are grappling in a clinch, typically using clinch holds. Clinching the opponent can be used to eliminate the opponent's effective usage of some kicks, punches, and melee weapons. The clinch can also be used as a medium to switch from stand-up fighting to ground fighting by using takedowns, throws or sweeps.

Clinch fighting is emphasized in wrestling, Judo, Muay Thai, Lethwei, Sambo, Wing Chun, Brazilian Jiu-Jitsu, and mixed martial arts.

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