en Arm (disambiguation)

An arm is an upper limb of the body.

Arm or ARM may also refer to:

Geography

Arm, Mississippi, an unincorporated community in Lawrence County, Mississippi
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), widely known geographical nickname for the municipality of Enontekiö
County Armagh, Northern Ireland, Chapman code ARM
Armenia (ISO 3166-1 alpha-3 country code)

Asteroid Redirect Mission, a proposed NASA mission
Atmospheric Radiation Measurement, a program of the United States Department of Energy
Advanced Robotics for Manufacturing, a consortium established in 2017

ARM architecture family, a RISC instruction set family
Arm Holdings, a British multinational company that designs the ARM computer 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

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

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

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 (English: Afrikaner Resistance Movement)
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 UK 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

Arm (dominoes), a line of dominoes with one open end
Armenian language (ISO 639-2 code)
Adjustable-rate mortgage, a type of mortgage loan
Argentine peso moneda nacional (ISO 4217 code), a former currency of Argentina
Armada República Mexicana, a ship prefix of the Mexican Navy
American Racing Manual, a publication covering Thoroughbred horse racing in the United States
Armidale Airport, IATA airport code "ARM"
Armadale railway station, Melbourne
AR Murugadoss, also known as ARM, Indian filmmaker