Firefly (disambiguation)

Firefly may refer to:
* Firefly - the callsign for a Stryker APC in Call of Duty: Modern Warfare 3
* Firefly (class) - a multiplayer class in Call of Duty 3 and Call of Duty Online
* Sherman Firefly - a specialized M4 Sherman tank specializing in engaging heavy armor
* Firefly Swarm - a cyber core ability in Call of Duty: Black Ops III