| 4rum | Forum | |
| AABF | Australian Arab Business Forum | |
| AABP | Academy Award Best Picture | |
| AAF | American Action Forum | |
| AAMF | African American Male Forum | |
| AAPF | African American Policy Forum | |
| AAPF | Asheville Area Piano Forum | |
| AASF | ASEAN Automobile Safety Forum | |
| AASF | Abhigyan Abhikaushalam Students Forum | |
| ABDF | Australian Bearded Dragon Forum | |
| ABEF | Aylsham Business and Enterprise Forum | |
| ACA | Anti-Corruption Agency | |
| ACAF | African Cultural Art Forum | |
| ACAF | Alexandria Contemporary Arts Forum | |
| ACF | American Composers Forum | |
| ACF | Air Cargo Forum | |
| ACF | Arewa Consultative Forum | |
| ACFI | Air Cargo Forum India | |
| ACFK | Ahli Club Forum Kancil | |
| ACIF | Anti Counterfeit and Infringement Forum | |
| ACLF | Annual Chapter Leader Forum | |
| ACMF | ASEAN Capital Markets Forum | |
| ACMF | Advanced Cranio Maxillofacial Forum | |
| ACOF | Anthony Callea Official Forum | |
| ACSF | Architecture Culture and Spirituality Forum | |
