An arm is an upper limb of the body.
Arm, arm, or ARM may also refer to:
Geography Arm, Mississippi, an unincorporated community in the United States Arm (geography), a narrow stretch of a larger body of water Distributary or arm, a subsidiary branch of a river Arm River (disambiguation), several rivers and locations "Arm of Finland" (Suomen käsivarsi), a widely known geographical nickname for the municipality of Enontekiö Armenia (ISO 3166-1 alpha-3 and UNDP code: ARM) County Armagh, Northern Ireland (Chapman code: ARM)
Science and medicine Anorectal malformation, a birth defect in which the rectum is malformed Aldo-keto reductase family 1, member A1, an enzyme
Technology Asteroid Redirect Mission, a proposed NASA mission Atmospheric Radiation Measurement, a program of the United States Department of Energy Advanced Robotics for Manufacturing, an American consortium (founded 2017)
Computing Arm Holdings, a British multinational company that designs the Arm computer processors Arm architecture family, a RISC instruction set family List of ARM processors Application Response Measurement, an open standard for diagnosing performance bottlenecks Abstract rewriting machine, a virtual machine Arm (software), a CLI status monitor for Tor
Weaponry Armament, any implement or device that is used to deter, threaten, inflict physical damage, harm, or kill Firearm, a portable gun Anti-radiation missile, a missile designed to detect and home in on an enemy radio emission source
Fiction ARM (film), a 2024 Indian film ARM (novella), a novella by Larry Niven Amalgamated Regional Militia, a fictional group from Larry Niven's Known Space universe Armageddon (MUD), or Arm, a text-based online role-playing game ARM, a faction in Chris Taylor's video game Total Annihilation
Organizations and movements Africa Reparations Movement, a British organization advocating reparations for slavery (1993–2000) African Rainbow Minerals, a mining company based in South Africa African Resistance Movement, an anti-apartheid movement in South Africa in the 1960s Afrikaner Weerstandsbeweging () Animal Rights Militia, a banner used by animal rights activists ARM Cement Limited, a mining and manufacturing company in Kenya Army of the Republic of Macedonia, now Army of the Republic of North Macedonia Associação dos Radioamadores de Macau, an amateur radio organization in Macao Asociația Radioamatorilor din Moldova, an amateur radio organization in Moldova Association of Radical Midwives, a British organisation for midwives Association of Railway Museums, an organization in North America Association of Recovering Motorcyclists, an international motorcycle association Australian Republican Movement, a lobby group that promotes changing Australia to a republic Autism rights movement, a social movement
Other uses Arm (dominoes), a line of dominoes with one open end Adjustable-rate mortgage, a type of mortgage loan Armada República Mexicana, a ship prefix of the Mexican Navy American Racing Manual, a publication covering Thoroughbred horse racing in the United States Armadale railway station, Melbourne AR Murugadoss, also known as ARM, an Indian filmmaker Armenian language (ISO 639-2 code) Argentine peso moneda nacional, a former currency of Argentina (ISO 4217 code: ARM) Armidale Airport, Australia (IATA code: ARM)
See also Lever arm, a concept used in the calculation of torque, the rotational analogue of linear force Arms (disambiguation) Arming (disambiguation)