ALARM (Air Launched Anti-Radiation Missile) was a British anti-radiation missile designed primarily to destroy enemy radars for the purpose of Suppression of Enemy Air Defense (SEAD). It was used by the RAF and the Royal Saudi Air Force, and retired at the end of 2013.

An alarm device or system of alarm devices gives an audible, visual or other form of alarm signal about a problem or condition. Alarm devices are often outfitted with a siren.