| Acronym | Definition | 
|---|
| ACIS➣Advanced CCD Imaging Spectrometer | 
| ACIS➣Access Control Interlock System | 
| ACIS➣Academic Information Services | 
| ACIS➣Acoustic Controlled Induction System | 
| ACIS➣Automotive Competitiveness and Investment Scheme (Australia) | 
| ACIS➣Accounting/Computer Information Systems (various schools) | 
| ACIS➣American Conference for Irish Studies | 
| ACIS➣Academic Information Systems (IBM) | 
| ACIS➣All Children in School (UN) | 
| ACIS➣Applied Climate Information System (US NOAA) | 
| ACIS➣American Committee for Interoperable Systems | 
| ACIS➣Automated Customs Information Service (Canada) | 
| ACIS➣AXAF CCD Imaging Spectrometer (now Advanced CCD Imaging Spectrometer) | 
| ACIS➣Aircrew Integrated Systems | 
| ACIS➣Advanced Control Indicator Set | 
| ACIS➣Acoustic Controlled Induction System (Toyota) | 
| ACIS➣Advanced Cargo Information System | 
| ACIS➣American Council for International Studies | 
| ACIS➣Advanced Cellular Internet Service | 
| 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➣All Source Intelligence System | 
| ACIS➣Alan Grayer, Charles Lang, Ian Braid, Dick Sower (Solid Modeling CAD library) | 
| ACIS➣Avionics, Control & Information System | 
| ACIS➣Automated Criminal Infractions System (North Carolina crime database) | 
| ACIS➣Airfone Customer Information System (billing system for Airfone) |