The M2 flamethrower was an American, man-portable, backpack flamethrower that was used in World War II, the Korean War, and the Vietnam War. The M2 was the successor to the M1 and M1A1 flamethrowers. Although its burn time was around 7 seconds long, and the flames were effective around 20–40 meters, it was still a useful weapon. With the arrival of flamethrower tanks, the need for flamethrower-carrying infantrymen to expose themselves to enemy fire had been greatly reduced.

Though some M2s were sold off, the majority were scrapped.