| Acronym | Definition |
|---|
| ACIS | Advanced CCD Imaging Spectrometer |
| ACIS | Academic Information Systems (IBM) |
| ACIS | American Conference for Irish Studies |
| ACIS | Automated Customs Information Service (Canada) |
| ACIS | Automotive Competitiveness and Investment Scheme (Australia) |
| ACIS | American Committee for Interoperable Systems |
| ACIS | AXAF CCD Imaging Spectrometer (now Advanced CCD Imaging Spectrometer) |
| ACIS | Acoustic Controlled Induction System (Toyota) |
| ACIS | Advanced Cargo Information System |
| ACIS | American Council for International Studies |
| ACIS | Advanced Cellular Internet Service |
| ACIS | Aircrew Integrated Systems |
| ACIS | Advanced Control Indicator Set |
| ACIS | Arms Control Intelligence Staff |
| ACIS | Ameritech Customer Information System |
| ACIS | Automated Chemical Inventory System |
| ACIS | Associate of the Chartered Institute of Secretaries |
| ACIS | Automated Combat Information System |
| ACIS | Army Command Information System |
| ACIS | Amphibious Command Information System |
| ACIS | Arms Control Impact Statement |
| ACIS | Armament Control Indicator Set (AN/ASQ-165) |
| ACIS | Avionics/Crew Interface Simulator |
| ACIS | Airborne Combat Information System |
| ACIS | Association for Computing & Information Sciences |
| ACIS | Actual Cubic Inches per Second |
| ACIS | Automatic Customer/Caller Identification System (Sprint) |
| ACIS | Avionics, Control & Information System |
| ACIS | Alan Grayer, Charles Lang, Ian Braid, Dick Sower (Solid Modeling CAD library) |
| ACIS | All Source Intelligence System |
| ACIS | Automated Criminal Infractions System (North Carolina crime database) |
| ACIS | Airfone Customer Information System (billing system for Airfone) |