| Abbreviation | Definition |
|---|---|
| ABF | Above and Beyond Fitness |
| ABHAY | Any body have a YO-YO |
| ACFL | Assistant Command Fitness Leader |
| ACSF | Australian College of Sports and Fitness |
| AFC | Aquatic Fitness Center |
| AFCC | Abington Fitness and Country Club |
| AFFD | Auditory fitness for duty |
| AFFT | Air Force Fitness Test |
| AFG | Advanced Fitness Group |
| AFNA | American Fitness and Nutrition Academy |
| AFPA | American Fitness Professionals Associates |
| AFS | Applied Fitness Solutions |
| AFSSP | Anytime Fitness South St Paul |
| AFWC | Algonquin Fitness Wellness Centre |
| AHF | American Health Fitness |
| AIFE | American Institute of Fitness Educators |
| ALFS | Active Lifestyles Fitness Socialising |
| ANF | All Natural Fitness |
| APFR | Aiken Pet Fitness and Rehabilitation |
| APFT | Annual Physical Fitness Test |