| Abbreviation | Definition |
|---|---|
| ALSARM | Advanced Life Support Automated Remote Manipulator |
| ALSC | Autonomous Linear Sequential Circuit |
| ALSC | Athletic Ladies Social Club |
| ALSE | Astronaut Life Support Equipment |
| ALSF | Aggregates Levy Sustainability Fund |
| ALSF | Approach Lighting System With Sequenced Flashing Lights |
| ALSF | Australian Library Schools Forum |
| ALSIP | Approach Lighting System Improvement Program |
| ALSIP | Approach Lighting System Improvement Plan |
| ALSP | Agricultural Land Stewardship Program |
| ALSP | Aggregate Level Simulation Protocol |
| ALSS | Airlock Support System |
| ALT | Assembly Line Type |
| ALT | Application Load Table |
| ALT | Algorithmic Learning Theory |
| ALT | Alternate key |
| ALT | Alanine AminoTransferase |
| ALT | Abundant Larval Transcript |
| ALT | Assistant Language Teacher |
| ALT | Assistant Language Teachers |
| ALT | Approach and Landing Test |
| ALT | Alanine Transaminase |
| ALTA | Atlanta Lawn Tennis Association |
| ALTA | Adult Literacy Through The Arts |
| ALTC | Automatic Load Tap Changing |
| ALTC | Australian Learning and Teaching Council |
| ALTE | Acute Life Threatening Event |
| ALTERS | Allied Telecommunications Record System |
| ALTM | Airborne Laser Terrain Mapper |
| ALTMS | Airborne Laser Topographic Mapping System |
| ALTR | Approach and Landing Test Requirement |
| ALU | Arithmetic Logic Unit |
| ALU | Applied Laser Unit |
| ALU | Association of LISP Users |
| ALU | Average Labor Unit |
| ALU | Associative Location Unit |
| ALU | Arithmetic/Logic Unit |
| ALU | All Liquored Up |
| ALUA | Asymmetric Logical Unit Access |
| ALV | Abelson Leukemia Virus |
| ALVT | Advanced Low Voltage Technology |
| am | ante meridiem |
| AM | Artium Magister |
| AM | Americium |
| AM | Access Method |
| AM | Automatic Margins |
| AM | Administration Manager |
| AM | Accounts Manager |
| AM | Antenna Management |
| AM | Amplitude Modulation |