| Acronym | Definition |
|---|
| ACL | Access Control List |
| ACL | Anterior Cruciate Ligament (connective tissue of the knee; common injury) |
| ACL | Association for Computational Linguistics |
| ACL | Austin City Limits (PBS Sshow) |
| ACL | Atlantic Coast Line |
| ACL | Adult and Community Learning |
| aCL | Anti-Cardiolipin (Antibody) |
| ACL | Audit Command Language |
| ACL | Agent Communication Language |
| ACL | Atlantic Container Line |
| ACL | Allegro Common LISP |
| ACL | Automotive Components Limited (various companies) |
| ACL | American Classical League |
| ACL | Acetyl-L-Carnitine |
| ACL | Advanced CMOS Logic |
| ACL | Allowable Cabin Load |
| ACL | Advanced Computing Laboratory |
| ACL | Australian Centre for Languages (Syndey, NSW, Australia) |
| ACL | Association of Christian Librarians |
| ACL | Asynchronous Connectionless (Bluetooth) |
| ACL | Applied Color Label |
| ACL | Association Culture et Loisirs (French: Culture and Recreation Association) |
| ACL | Analytical Chemistry Laboratory |
| ACL | Atelier de Création Libertaire (French: Libertarian Design Workshop; publisher; Lyon, France) |
| ACL | Audio Cleaning Lab (audio noise reduction software) |
| ACL | Association Canadienne de Linguistique (French: Canadian Linguistics Association; Canada) |
| ACL | Automobile Club Luxembourg |
| ACL | Automotive Components Ltd (Australia) |
| ACL | Anthroponotic Cutaneous Leishmaniasis |
| ACL | Alternate Concentration Limit |
| ACL | Applicative Common Lisp |
| ACL | Asynchronous Connection-less Link (Bluetooth) |
| ACL | Automatic Carrier Landing |
| ACL | Atlantic City Line (New Jersey Transit commuter rail line) |
| ACL | American Consultants League |
| ACL | Auto Correct List (filetype extension) |
| ACL | Allowable Combat Load |
| ACL | Air Cadet League (of Canada) |
| ACL | Agent Control Language |
| ACL | Academic Computing Lab |
| ACL | Application Control Language |
| ACL | Access Compatibility Layer |
| ACL | Allowable Cargo Load |
| ACL | Arbortext Command Language (filename extension) |
| ACL | Active Control List |
| ACL | Annuaire des Collectivités Locales (French: Directory of Local Government) |
| ACL | Acquisition Career Level |
| ACL | Advanced Computer Laboratory |
| ACL | Associated California Loggers |
| ACL | Administrative Control Limit |
| ACL | Anti Communist League |
| ACL | Aircraft Logbook |
| ACL | Affichage a Cristaux Liquide (French: liquid crystal display) |
| ACL | Accelerator Control Listing |
| ACL | Anti-Collision Lighting |
| ACL | Alpine Club de Luxembourg (French; Luxembourg car club) |
| ACL | Authorized Consumption List |
| ACL | Automove Control Language |
| ACL | Automobile Club du Loiret (French: Automobile Club of Loiret; Loiret, France) |
| ACL | Auxiliary Cooling Loop |
| ACL | Antenna Center Line |
| ACL | Accelerator Command Language |
| ACL | Aeronautical Computer Laboratory |
| ACL | Advanced Concepts Laboratory |
| ACL | Average Contaminant Level |
| ACL | Allowance Components List |
| ACL | Available Cabin Load |
| ACL | Akumiitti Connectivity Library (SMSC connectivity software) |
| ACL | ASCII Control Language |
| ACL | Automatic Clutter Mapping |
| ACL | Application Compatibility List |
| ACL | Analog Configuration Line |
| ACL | Automated Comprehensive Layout |
| ACL | Asynchronous Connection-Oriented Link (logical transport, Bluetooth) |
| ACL | Archives Centrales et Laboratoires (French: Central Archives and Laboratories; Royal Institute of Cultural Heritage; Belgium) |
| ACL | Assistance et Conseil en Logistique (French: Support and Logistics Council; consulting company; Rouen, France) |
| ACL | Anti-Corruption Law (various locations) |
| ACL | Association for Children's Librarians (California) |
| ACL | Air Control Level (US DoD) |
| ACL | Asian Champions League (sports) |
| ACL | American Cruise Lines (various locations) |
| ACL | Amherst College Library (Amherst, MA) |