| Adaptive Focused Acoustics | Academic & Science |
| Augsburg Fairview Academy | Academic & Science |
| Adjunct Faculty Association | Academic & Science |
| Automatic Fire Alarm | Academic & Science |
| American Federation of Astrologers | Academic & Science |
| Air Force Academy | Academic & Science |
| Antifading Antenna | Academic & Science |
| Aphanizomenon Flos-Aquae | Academic & Science |
| Associate of The Institute of Financial Accountants | Accounts and Finance |
| Accounting Firms Associated, Inc. | Accounts and Finance |
| San Rafael | Airport Code |
| ASF Group, LTD. | Business |
| Action Figure Authority | Business |
| Authorised Financial Adviser | Business |
| American Federation of Aviculture | Business |
| Ag Food Associates | Business |
| Average Fock Approximation | Chemistry |
| American Fence Association | Community |
| Art For Approval | Community |
| Anime Festival Asia | Community |
| Arab Fertilizer Association | Community |
| Artists For Art | Community |
| Atrial Fibrillation Association | Community |
| Advertising Federation of America | Community |
| Anti Fascist Action | Community |
| Asatru Folk Assembly | Community |
| American Finance Association | Community |
| Association of Flight Attendants | Community |
| American Farriers Association | Community |
| American Forensic Association | Community |
| American Family Association | Community |
| As Fine As... | Community |
| Asian First Academy | Community |
| Action For AIDS | Community |
| Arizona Fiduciaries Association | Community |
| Air Force Association | Community |
| Architecture Feasibility Assessment | Computer Hardware |
| Argument Field Asterisk | Computing |
| Arbitrary Function Argument | Computing |
| Avast Free Antivirus | Computing |
| Avira Free Antivirus | Computing |
| Academy For Ads | Computing |
| Association des Fournisseurs d'Acces | Computing |
| Associate In Fine Arts | Educational Degree |
| All Flash Arrays | General |
| And Flying Away | General |
| Automatic Format Assignment | General |
| All For Animals | General |
| Advert For Anything | General |
| Acromegaloid Facial Appearance | General |
| Agricultural Farms Anonymous | General |
| As Far As | General |
| Adaptive Frequency Agility | General |
| Abstract Factor Anal | General |
| Aninimation From All | General |
| Another F***ing Acronym | General |
| Association Francaise des Automobilistes | General |
| Available For Adoption | General |
| Accurate Fuselage Assembly | General |
| Additional Flight Attendant | General |
| Association of Fat Asses | General |
| Alzheimer's Foundation of America | General |
| Animal Food Additive | General |
| Anti Fascistische Actie | General |
| Agriculture Future of America | General |
| Abducens Facial Auditory | General |
| Always Flexible and Adaptable | General |
| All Flash Array | General |
| Al Futtaim Automotive | General |
| Approved For Automotive | General |
| Adaptiver Fahrassistent | General |
| Aymerich Fabrica de Automoviles | General |
| Anime Freaks of America | General |
| American Fisheries Act | Governmental |
| Agriculture Fairness Alliance | Governmental |
| American Federation of Arts | Governmental |
| Anti-Facist Association | Governmental |
| Aerospace Futures Alliance | Governmental |
| Asociación Fe y Alegría | International |
| Atlas of Fundus Angiography | Medical |
| Ablation for Atrial Fibrillation | Medical |
| All Fluids Allowed | Medical |
| American Ferret Association | Medical |
| Architecture of The Future Army | Military and Defence |
| Aerial Field Artillery | Military and Defence |
| Air Force Advocates | Military and Defence |
| San Rafael, MD, Argentina | Regional |
| Afro-Asiatic (Other) | Regional |
| Airframe Assembly | Space Science |
| American Freestyle Association | Sports |
| Allentown Footbag Association | Sports |
| American Fastpitch Association | Sports |