| Abbreviation | Definition |
|---|---|
| ASF | Autism Science Foundation |
| ASFA | Association of Science Fiction and Fantasy Artists |
| ASFI | Agronomic Science Foundation, Inc. |
| ASG | Addiction Services Group |
| ASH | A Safe Haven |
| ASH | Action on Smoking and Health |
| ASH | Alliance For Safety To Humanity |
| ASH | America's Second Harvest |
| ASHA | American Social Health Association |
| ASHD | Association for Sustainable Human Development |
| ASHE | Association for the Study of Higher Education |
| ASHW | America's Second Harvest of Wisconsin |
| ASI | American SIDS Institute |
| ASI | American Swedish Institute |
| ASI | Any Soldier, Inc. |
| ASIA | American Spinal Injury Association |
| ASIC | Audit Services and Institute Compliance |
| ASID | American Society Of Interior Designers |
| ASIP | Arab Society for Intellectual Property |
| ASK | Arts Society King (King Township, Ontario, Canada) |