ARL

ARL may refer to:

Military

 * A US Navy hull classification symbol: Landing craft repair ship (ARL)
 * Admiralty Research Laboratory, UK
 * United States Army Research Laboratory
 * ARL 44, a WWII French tank

Organizations

 * Aero Research Limited, a UK adhesives company
 * Air Resources Laboratory of US NOAA
 * Association of Research Libraries, US and Canada
 * Pennsylvania State University Applied Research Laboratory, US
 * Animal Rescue League of Western Pennsylvania, US

Sports

 * Albanian Rugby League
 * Auckland Rugby League
 * Australian Rugby League

Transportation

 * Airport Rail Link (Bangkok), Thailand
 * Autolinee Regionali Luganesi, Swiss bus company
 * Arlesey railway station (National Rail code), UK
 * Armour Refrigerator Line, a refrigerator car line
 * Arly Airport (IATA airport code), Burkina Faso
 * Arriva Rail London, operators of London Overground rail services

Computing

 * Authority revocation list, in cryptosystems

Other

 * Argyll, historic county in Scotland, Chapman code