The AGM-114 Hellfire is an air-to-surface missile (ASM) developed primarily for anti-armor use. It has multi-mission, multi-target precision-strike capability, and can be launched from multiple air, sea, and ground platforms. The Hellfire missile is the primary 100 lb-class air-to-ground precision weapon for the armed forces of the United States and many other nations. The HELLFIRE name comes from its original intention as a helicopter-launched fire-and-forget weapon (HELicopter Launched FIRE-and-forget).

The AGM-114 Hellfire is a combat-proven tactical missile system. The missile has been in combat use since the mid-1980s.

The Hellfire today is a comprehensive weapon system, one that can be deployed from rotary- and fixed-wing aircraft, waterborne vessels and land-based systems against a variety of targets.

The development of the Hellfire Missile System began in 1974 with the U.S. Army requirement for a "tank-buster", launched from helicopters to defeat armored fighting vehicles. Production of the AGM-114A started in 1982. The Development Test and Evaluation (DT&E) launch phase of the AGM-114B took place in 1984. The DT&E on the AGM-114K was completed in Fiscal Year (FY)93 and FY94. AGM-114M did not require a DT&E because it is the same as the AGM-114K except for the warhead. Most variants are laser guided with one, AGM-114L "Longbow Hellfire", being radar guided. Laser guidance can be provided either from the launcher, such as the nose-mounted opto-electronics of the AH-64 Apache attack helicopter, other airborne target designators or from ground based observers, the latter two options allowing the launcher to break line of sight with the target and seek cover.