Flag football is a version of American football that is popular across the United States and Europe. The basic rules of the game are similar to those of the professional game, but instead of tackling players to the ground, the defensive team must remove a flag or flag belt from the ball carrier ("deflagging") to end a down. In most organized play, players wear a belt with flags around the waist, but the number of flags vary from league to league.

Like touch football, flag football was designed in an effort to minimize injuries and allows football fans to enjoy playing the game without having to purchase expensive protective equipment.