Stun gun may refer to:
Weapons
- Captive bolt pistol, a tool used to stun animals prior to slaughter
- Directed-energy weapon, a ranged weapon that damages its target with highly focused energy without a solid projectile
- Electroshock weapon, an incapacitating weapon
- Various weapons in science fiction
Other uses
- Nickname of South Korean mixed martial artist Dong Hyun Kim (born 1981)