| Abbreviation | Definition |
|---|---|
| ABRF | American Board of Radiology Foundation |
| ABRF | Asian Biological Research Foundation |
| ABSF | Alan B Slifka Foundation |
| ABSF | Alan B. Slifka Foundation |
| ACAF | Addison Community Athletics Foundation |
| ACAF | Aldo Castillo Arts Foundation |
| ACAF | American Counseling Association Foundation |
| ACAF | Australia China Art Foundation |
| ACBF | Allegheny County Bar Foundation |
| ACCF | American Chestnut Cooperators Foundation |
| ACCF | American College of Cardiology Foundation |
| ACCF | Australian Cervical Cancer Foundation |
| ACEF | Absenger Cancer Education Foundation |
| ACEF | American College of Endocrinology Foundation |
| ACF | Alabama Coastal Foundation |
| ACF | Alaska Community Foundation |
| ACF | American Chestnut Foundation |
| ACF | Arizona Community Foundation |
| ACF | Arts Center Foundation |
| ACFF | Azerbaijani Culture Friends Foundation |