An Arm is an upper limb of the body.
, '''ARM''', '''Arms''' or similar may also refer to:
- Armaments; see Weapon
- An arm of a river is a stream that branches off and flows away from the river's main channel. A more technical term is Distributary . The word is also occasionally used in the name of a sea fjord, such as Indian Arm.
- Coat Of Arms
- Arm, a traditional name for the star Eta Capricorni
- Arm (geography) , a narrow stretch of a larger body of water.
- ARM Architecture , a computer processor architecture
- ARM Limited , an English company producing the ARM computer processors
- Abstract Rewriting Machine
- Acoustic Resistive Matrix , an enclosure design used in REL subwoofers
- Ada Reference Manual
- Adjustable Rate Mortgage
- Administrator Reference Manual , found in BIND
- Age-related Maculopathy in ophthalmology
- Artificial rupture of membranes; see Amniotic Sac
- Amalgamated Regional Militia , from Larry Niven's Known Space universe
- American Rehabilitation Ministries
- Animal Rights Militia
- Annotated Reference Manual
- Anti-radiation Missile
- Application Response Measurement
- Argentine Peso Moneda Nacional , from its ISO 4217 currency code
- Armed Resistance Movement , an anti-apartheid movement in South Africa
- Armenia
- Armenian Language , from its ISO 639 alpha-3 code
- Association Of Radical Midwives
- Association Of Recovering Motorcyclists
- Asynchronous Response Mode
- Atmospheric Radiation Measurement , a program of the United States Department of Energy
- Atomic-resolution Microscope
- Australian Republican Movement
- Aviation Radioman , a US Navy rank during the 1940s
- ÄRM , magical weapons used in the anime and manga series MÄR
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