| Acronym | Definition |
|---|
| ALC | Alcohol |
| ALC | América Latina y el Caribe |
| ALC | Air Logistics Center |
| ALC | Acetyl-L-Carnitine |
| ALC | Automatic Level Control |
| ALC | Alternative Learning Center |
| ALC | Assisted Living Concepts Inc (Menomonee Falls, WI) |
| ALC | Accredited Land Consultant |
| ALC | a la carte |
| ALC | American Language Center (Karachi, Pakistan) |
| ALC | Allocations |
| ALC | Adult Learning Centre |
| ALC | Asynchronous Layered Coding |
| ALC | Atlantic Lottery Corporation |
| ALC | Atlantic Lottery Corporation (Canada) |
| ALC | American Lutheran Church (now merged with Evangelical Lutheran Church in America) |
| ALC | Asian Law Caucus |
| ALC | A Law Corporation |
| ALC | Agency Location Code |
| ALC | Absolute Lymphocyte Count |
| ALC | Academic Learning Center |
| ALC | Automatic Light Control |
| ALC | American Land Conservancy |
| ALC | Air Force Logistics Command |
| ALC | Autoclaved Lightweight Concrete |
| ALC | Alien Labor Certification |
| ALC | Agricultural Land Classification (Australia and UK) |
| ALC | American Loggers Council |
| ALC | AIDS/Life Cycle (California) |
| ALC | Advanced Leaders Course (US Army) |
| ALC | Air Logistics Command |
| ALC | Automatic Load Control |
| ALC | Acquisition Life Cycle |
| ALC | Alicante, Spain - Alicante (Airport Code) |
| ALC | African Laser Centre |
| ALC | Airline Link Control |
| ALC | American Literacy Council |
| ALC | Adelphi Laboratory Center |
| ALC | Ascent Logic Corporation |
| ALC | Accounting Legend Code |
| ALC | Abundant Life Center |
| ALC | Adaptation Layer Controller |
| ALC | Assistant Labour Commissioner (India) |
| ALC | Application Limiting Constituent |
| ALC | American LaMancha Club (Hawkins, Wisconsin) |
| ALC | Anindilyakwa Land Council (statutory authority representing Aboriginal land ownesr of Groote Eylandt) |
| ALC | Automatic Leveling Control |
| ALC | American Livestock Connection |
| ALC | Agency Logistics Center |
| ALC | Assembler Language Code |
| ALC | Assignment Limitation Code |
| ALC | Association of Liberal Councillors (Great Britain, now ALDC) |
| ALC | Abraham Lincoln Centre |
| ALC | Baird's Slickhead (FAO fish species code) |
| ALC | Altered Level of Consciousness |
| ALC | American Liberty Currency |
| ALC | Authorized Learning Center |
| ALC | Absorber-Lined Chamber |
| ALC | Assembler Language Coding |
| ALC | Alsace Lorraine Conduite (French driving school) |
| ALC | A Last Concern (band) |
| ALC | Accueil Loisirs Culture (French recreational association) |
| ALC | Additional Liability Company |
| ALC | Amicale Laïque des Couëts (French athletic club) |
| ALC | Adult Literacy Class |
| ALC | Advanced Land Combat |
| ALC | Arithmetic Logic Circuit |
| ALC | ATM Line Card |
| ALC | American Lancia Club |
| ALC | Augmented Landing Site |
| ALC | Associated Logging Contractors, Inc. (Couer d'Alene, Idaho) |
| ALC | Access Line Charge |
| ALC | Advanced Leadership Conference |
| ALC | Acceptable Level of Competence |
| ALC | Army Logistics Center |
| ALC | Administration and Logistics Center |
| ALC | Adaptive Line Controller |
| ALC | Automatic Leveling Circuit |
| ALC | Avian Leukosis Complex |
| ALC | Alternate Logistic Support Analysis Control Number |
| ALC | Area Logistics Command |
| ALC | American Lamb Council (Englewood, CO) |
| ALC | Alerts Committee |
| ALC | Adventures in Language & Culture (Brunswick, Maine USA) |
| ALC | Axiolinguocervical |
| ALC | Air Logistics Coordinator |
| ALC | Agape Link Collection (website) |
| ALC | Chief Aviation Electronicsman (discontinued Naval Rating) |
| ALC | Authorized Linear Combination |
| ALC | Automatic Lane Controller |
| ALC | Analog Loop Carrier |
| ALC | Auxiliary Lamp Circuit |
| ALC | Air Lift Circulator |
| ALC | Alarm Control Subsystem |
| ALC | Auto Level Converter |
| ALC | Alternative Local Carrier |
| ALC | Amicale Laïque de Crosne (French cultural association) |
| ALC | Alternative Lifestyle Companion |
| ALC | Academic Learning Compact (various organizations) |
| ALC | Atonement Lutheran Church (various locations) |
| ALC | Asian Languages & Cultures (University of California, Los Angeles) |
| ALC | Assisted Living Community (various locations) |
| ALC | Arkansas Legislative Council |