| Architetural Feasibility Study | Academic & Science |
| Austin Film Society | Academic & Science |
| American Folklore Society | Academic & Science |
| Architectural Framing Systems | Academic & Science |
| American Fern Society | Academic & Science |
| Australian Fisheries Service | Academic & Science |
| Asian Fisheries Society | Academic & Science |
| American Fisheries School | Academic & Science |
| American Field Study | Academic & Science |
| Advanced Farming System | Accounts and Finance |
| American Fields Service | Business |
| Arlt Frei Systems | Business |
| Auto Find Sources | Business |
| Available For Sale | Business |
| A Fair Suggestion | Business |
| Amiad Fil. | Business |
| American Financial Systems | Business |
| Automated Financial Systems | Business |
| Associates First Capital Corporation | Business |
| Apparel Footwear Solution | Business |
| American Field Studies | Business |
| Atomic Fluorescence Spectrometry | Chemistry |
| American Fisheries Society | Community |
| Alumni, Families, and Schools | Community |
| Angel Flight Samaritans | Community |
| Association of Fitness Studios | Community |
| Abington Friends School | Community |
| Alaska Fire Service | Community |
| American Foundry Society | Community |
| Anti Flutter System | Computing |
| Auto Focus System | Computing |
| Atheos File System | Computing |
| Adobe Form Server | Computing |
| Application Function Server | Computing |
| Azure File Sync | Computing |
| Automatic File System | Computing |
| American Filing System | Computing |
| Africana Studies | Educational Degree |
| Adaptive Frontlighting System | Electronics |
| Awesome File System | General |
| April Fools Syndrome | General |
| Ars Flying Squad | General |
| Combat Stores Ship (Auxiliary, Freight, Stores) | General |
| Aerodrome Fire Service | General |
| Aeronautical Fixed Service | General |
| Automatic Flight System | General |
| Archive File Service | General |
| Advanced Farming Systems | General |
| American Fisheries | General |
| Apparel and Footwear Solutions | General |
| Adjustable Front Sight | General |
| Apple File Sharing | General |
| Alabama Foundation Specialists | General |
| alloy frame SS | General |
| Automatic Frequency Selection | General |
| Analgesic Foot Spray | General |
| Airborne File Server | General |
| Analyzer Feed System | General |
| Away From Screen | General |
| Advanced Facebook Search | General |
| Advanced Flooring Solutions | General |
| And Off So | General |
| American Field Services | General |
| Associated Food Stores | General |
| Applied Food Sciences | General |
| Assembled Foundation System | General |
| Accenture Federal Services | General |
| Apparel and Footwear Solution | General |
| Always Forever and Seriously | General |
| Adult and Family Services | General |
| AdSense For Search | General |
| Alternative Family Services | General |
| Advanced Fastening Supply | General |
| Ambulance Fee Schedule | General |
| Anime Fighting Simulator | General |
| Active Front Steering | General |
| Alternative Fuel System | General |
| Air Flow Sensor | General |
| Advanced Frontline Systems | General |
| Automotive Financial Services | General |
| Alternative Fuel Service | General |
| Air Fuel Ratio Sensor | General |
| Active Front Lighting System | General |
| Advanced Front Lighting System | General |
| Aluminium Foam Sandwich | General |
| a-Frame Front Suspension | General |
| Aftertreatment Fuel Supply | General |
| Auxiliary Fuel Supply | General |
| Air Flow System | General |
| Acura Financial Services | General |
| Automotive Fleet Service | General |
| Auto Forecast Solutions | General |
| Advanced Fuel Systems | General |
| Advanced Fuel Solutions | General |
| Auxiliary Fire Service | Governmental |
| American Field Service | Governmental |
| Advanced Frontline System | Governmental |
| Agency Fleet or Subfleet | Governmental |
| Asian Financial Society | International |
| Acid Fast Stain | Medical |
| Action for Sustainability | Medical |
| Allergic Fungal Sinusitis | Medical |
| ameloblastic fibrosarcoma | Medical |
| Adrenal Fatigue Syndrome | Medical |
| Alt Fan Starwars | Messaging |
| Armored Fighting Suit | Military and Defence |
| Air Fire Support | Military and Defence |
| Air Force Station | Military and Defence |
| Active Federal Service | Military and Defence |
| Abstract Force Simulator | Physics Related |
| Australia Frequently Asked | Regional |
| Andrew File System | Softwares |
| Archive File System | Softwares |
| Acer File System | Softwares |
| Atari File System | Softwares |
| Atmospheric Flight Support | Space Science |
| Applied Fitness Solutions | Sports |
| Association of Football Statisticians | Sports |
