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
• ADP-ribosylation factor-like protein, as in ARL3, ARL8A, ARL8B