| Abbreviation | Definition |
|---|---|
| ARF | Agricultural Research Foundation |
| ASAF | American Surgical Association Foundation |
| ASDF | Allentown School District Foundation |
| ASDF | Americas Sustainable Development Foundation |
| ASF | AIDS Services Foundation |
| ASF | Air Safety Foundation |
| ASF | American Scandinavian Foundation |
| ASF | Angelman Syndrome Foundation |
| ASF | Association of Small Foundations |
| ASF | Astronaut Scholarship Foundation |
| ASF | Autism Science Foundation |
| ASFA | American Schools Foundation Alliance |
| ASFC | American School Foundation of Chiapas |
| ASFC | Annual Sustaining Foundation Contributor |
| ASFE | Associated Soil and Foundation Engineers |
| ASFE | Association of Soil and Foundation Engineers |
| ASFM | American School Foundation of Monterrey |
| ASFU | Acid Survivors Foundation Uganda |
| ASLF | A Silver Lining Foundation |
| ASLF | and A Silver Lining Foundation |