| Acronym | Definition |
|---|
| ASF | Apache Software Foundation |
| ASF | Audi Space Frame |
| ASF | Air Safety Foundation |
| ASF | Alert Standard Format |
| ASF | Advanced Streaming Format (Microsoft file extension) |
| ASF | Administaff |
| ASF | Advanced Systems Format (filename extension) |
| ASF | Atlantic Salmon Federation |
| ASF | Active Streaming Format |
| ASF | Avocats Sans Frontières (French) |
| ASF | American Scandinavian Foundation |
| ASF | Angelman Syndrome Foundation |
| ASF | African Swine Fever |
| ASF | Avenged Sevenfold (band) |
| ASF | Alien Sex Fiend (band) |
| ASF | Astrakhan (Russia) |
| ASF | Alabama Shakespeare Festival |
| ASF | Army Service Forces |
| ASF | Alternative Splicing Factor |
| ASF | Army Special Forces |
| ASF | Astronaut Scholarship Foundation |
| ASF | Acid Survivors Foundation (Dhaka, Bangladesh) |
| ASF | Acceleration Studies Foundation |
| ASF | American School Foundation (Mexico City) |
| ASF | Aluminum Space Frame |
| ASF | AIDS Services Foundation (Orange County, California) |
| ASF | American Steel Foundries |
| ASF | Airport Security Force (Pakistan) |
| ASF | Auxiliary Security Force |
| ASF | Anarcho-Syndicalist Federation (Australian leftist political party) |
| ASF | Alert Standard Forum (Distributed Management Task Force) |
| ASF | Association des Sclérodermiques de France |
| ASF | Aeromedical Staging Facility |
| ASF | Agronomic Science Foundation |
| ASF | Asian Squash Federation |
| ASF | Anencephaly Support Foundation |
| ASF | Applied Science Fiction Inc. |
| ASF | Ansaldo Segnalamento Ferroviario (Finmeccanica company, Italy) |
| ASF | Aviation Support Facility |
| ASF | Auxiliary Service Facility |
| ASF | Additional Secondary Factor (LORAN-C) |
| ASF | Analytical Solutions Forum |
| ASF | Abdominal Subcutaneous Fat |
| ASF | Air Superiority Fighter |
| ASF | Army Stock Fund |
| ASF | American Share Foundation |
| ASF | Arcane Spell Failure (gaming) |
| ASF | Amps per Square Foot (current flow in anodizing and metal plating processes) |
| ASF | Africa Standby Force |
| ASF | Statgraphics Data File (file extension) |
| ASF | Aeromedical Staging Flight |
| ASF | Anti-silencing Factor (genetics) |
| ASF | Astounding Science Fiction magazine (later became Analog) |
| ASF | Application Support Facility |
| ASF | Adaptive Services Framework |
| ASF | Adaptive Sensor Fusion |
| ASF | Anomalous Scattering Factor |
| ASF | Alaskan SAR Facility |
| ASF | Administrative Support Facility (USPS) |
| ASF | Aviations Sans Frontières |
| ASF | Advanced Software Framework |
| ASF | Auxiliary Sorting Facility (US Post Office) |
| ASF | AME Software Framework |
| ASF | Allied Strike Force |
| ASF | Aktion Sühnezeichen Friedensdienste eV (Germany) |
| ASF | Additional Selection Factor |
| ASF | Attock Sahara Foundation (Pakistan) |
| ASF | Agent Security Facility |
| ASF | Average Stream Flow (water) |
| ASF | Avions Sans Frontières |
| ASF | Activation Support Facility |
| ASF | Application Services Function |
| ASF | Auxiliary Support Feature |
| ASF | American Schizophrenia Foundation |
| ASF | Applicant Supply File System |
| ASF | Accurate & Stable Frequency |
| ASF | Active Ship File |
| ASF | Ammonia Scrubber Feed |
| ASF | All Symbol Filter |
| ASF | Automatic Stripping Factor |
| ASF | Archive Storage Facility |
| ASF | Assembly Support Framework |
| ASF | Association Francophone en Systèmes (French) |
| ASF | Army Support Facility |
| ASF | Agent's Support File |
| ASF | Assignable Square Foot/Feet |
| ASF | Available Square Foot/Feet |
| ASF | Alpine and Sports Climbing Federation of Yugoslavia |