Air hammer may refer to: Air hammer (fabrication), a smaller hand-held or free-standing hammer used in fabrication work Air hammer (forging), a larger air driven power forging hammer Air hammer (pile driver), a pile driver that is driven by air Air Hammer (Transformers), a Beast Wars character Jackhammer, a larger pneumatic hand tool used to break up matter Nail gun, a pneumatic tool that drives nails Rivet gun or pneumatic hammer is used to drive/peen steel rivets in ship building and joining structural steel elements See also Pneumatic hammer (disambiguation)