AR1 may refer to
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AR-1 (multiple rocket launcher)
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Aerojet Rocketdyne AR1, a rocket engine
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Alba AR1, an experimental racing car
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Archaerhodopsin-1, a photoreceptor
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Arkansas's 1st congressional district
Arkansas's 1st congressional district is a U.S. congressional district in eastern Arkansas that elects a representative to the United States House of Representatives. It is currently represented by Republican Rick Crawford. With a Cook Parti ...
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Arkansas Highway 1
Arkansas Highway 1 (AR 1) is a designation for three List of state highways in Arkansas, state highways in east Arkansas. One segment of runs from U.S. Route 278 in Arkansas, U.S. Route 278 (US 278) in McGehee, Arkansas, McGehee north ...
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ArmaLite AR-1, a bolt-action rifle manufactured by
ArmaLite
ArmaLite, or Armalite, is an American small arms engineering company, formed in the early 1950s in Hollywood, California. Many of its products, as conceived by chief designer Eugene Stoner, relied on unique foam-filled fiberglass butt/stock fur ...
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IPCC First Assessment Report
The First Assessment Report (FAR) of the Intergovernmental Panel on Climate Change (IPCC) was completed in 1990. It served as the basis of the United Nations Framework Convention on Climate Change (UNFCCC). This report had effects not only on the ...
* , a repair ship of the United States Navy
* Acoustic Research AR-1, an acoustic suspension speaker from
Acoustic Research
Acoustic Research was a Cambridge, Massachusetts-based company that manufactured high-end audio equipment. The brand is now owned by VOXX. Acoustic Research was known for the AR-3 series of speaker systems, which used the acoustic suspension wo ...
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