| Abbreviation | Definition |
|---|---|
| AIS | Accelerated Indexing System |
| AIS | Adaptive Intelligent System |
| AIS | Amadeus Information System |
| AIS | Automated Indexing System |
| AIS | Automated Information System |
| AIS | Autonomous Intelligent System |
| AIT | Advanced Intelligent Tape |
| AIT | Advanced Intelligent Technology |
| AITR | Artificial Intelligence Laboratory Technical Report |
| AIU | Advice Information Updates |
| AIU | Application Interface Unit |
| AIX | Alternate IndeX |
| AL | Address List |
| ALC | Audio Library Context |
| ALG | Austin LinuxUser Group |
| ALGOL | ALGOrithmic Language |
| ALI | Application Loader Information |
| ALICE | Artistic Linguistic Internet Computer Entity |
| ALIS | Austin Local Internet Society |
| ALOHA | Advanced Learning On Higher Arithmetic |