| ARL | Abbreviated Rule Language 
| Others |
| ARL | Access Rights List
| Others |
| ARL | Acronym Reference List
| Others |
| ARL | Action Reflection Learning
| Others |
| ARL | Action Relation Listing
| Others |
| ARL | Additional Recreation Leave
| Others |
| ARL | Adjusted Ring Length
| Others |
| ARL | Admission Request Letter
| Others |
| ARL | Adult rat liver
| Others |
| ARL | Aerospace Robotics Lab
| Others |
| ARL | Aerospace Robotics Laboratory
| Others |
| ARL | Air Reconnaissance Low
| Others |
| ARL | Air Resources Laboratory
| Others |
| ARL | Airborne Reconnaissance Low
| Others |
| ARL | Airport Rail Link
| Others |
| ARL | Akamai Resource Locator
| Others |
| ARL | Alternative Route to Licensure
| Others |
| ARL | Alternative Routes to Licensure
| Others |
| ARL | America Responds with Love
| Others |
| ARL | Analytical Research Laboratories
| Others |
| ARL | Animal Refuge League
| Others |
| ARL | Animal Rescue League
| Others |
| ARL | Anti Reflective Lenses
| Others |
| ARL | Anti Reversal Latch
| Others |
| ARL | Anti-Riot Laws
| Others |
| ARL | Appliance Recovery Log
| Others |
| ARL | Applications and Research Lab
| Others |
| ARL | Applications and Research Laboratory
| Others |
| ARL | Applied Research Laboratories
| Others |
| ARL | Applied Research Laboratory
| Others |
| ARL | Approaching Real Life
| Others |
| ARL | Aquatic Research
| Others |
| ARL | Aquatic Research Laboratory
| Others |
| ARL | Architectural Robotics Lab
| Others |
| ARL | Archived Redo Log
| Others |
| ARL | Arctic Research Laboratory
| Others |
| ARL | Arizona Research Laboratories
| Others |
| ARL | Arkansas Regional Laboratory
| Others |
| ARL | Armour Refrigerator Line
| Others |
| ARL | Army Research Laboratory
| Others |
| ARL | Army Research Library
| Others |
| ARL | Art Resources Lab
| Others |
| ARL | Assessors Reference Library
| Others |
| ARL | Association of Research Libraries
| Others |
| ARL | Attendant Release Loop
| Others |
| ARL | Attock Refinery Limited
| Others |
| ARL | Australian Rugby League
| Others |
| ARL | Authority Revocation List
| Others |
| ARL | Auto Retro Limousin
| Others |
| ARL | Automated Reasoning Laboratory
| Others |
| ARL | Automobile Recycling Law
| Others |
| ARL | Automotive Research Laboratory
| Others |
| ARL | Automotive Research Library
| Others |
| ARL | Autotronics Research Lab
| Others |
| ARL | Average Run Length
| Others |
| ARL | Average Run Lengths
| Others |
| ARL | Axiom Right Left
| Others |
| ARL | Landing Craft Repair Ship (Auxiliary, Repair, Landing)
| Others |
| ARL | The Association of Research Libraries
| Others |