| ADS | Astrophysical Data System (at Havard-Smithsonian CfA) | - | Atmospheric Research Center |
| ADS | Aitken Double Star Catalog | - | Atmospheric Research Center |
| ADS | Accelerator Driven System | - | Computer Acronyms(common) |
| ADS | Annular Denuder System | - | Computer Acronyms(common) |
| ADS | Alternate Data Streams | - | Human Genome |
| ADS | Active Denial System - Astrophysics Data System - Attention Deficit Syndrome | - | Astronomy |
| ADS | Activity Data Sheet | - | Business and Finance |
| ADS | Airborne Data System | - | Business and Finance |
| ADS | Aircraft Data Systems | - | Business and Finance |
| ADS | Ancillary Data Service | - | Business and Finance |
