AR 5
# AR 5

AR5, AR 5, or AR-5 can refer to:

* ArmaLite AR-5, a .22 caliber bolt-action aircrew survival rifle
* Arkansas Highway 5, a designation for three state highways in Arkansas
* Arkansas's 5th congressional district, an obsolete district
* IPCC Fifth Assessment Report, a 2014 synthesis report produced by the Intergovernmental Panel on Climate Change
* USS Vulcan (AR-5), a US Navy repair ship
