- name unavailable
- 118 EMS Padova
- 118 EMS Regione Piemonte
- 702 Talk Radio
- 827 Inc.
- A.J. Walter Aviation
- A/C Flyer Magazine
- Aaron Jones
- AB Corporate Aviation
- ABA Air (Autoklub Bohemia Assistance)
- Aberdeen Helicopters
- Acadian Air Ambulance
- Ace Helicopter
- Ace Helicopters
- ACP Aviation Corp
- ACRO Aerospace
- ADAC
- Adam Ellis
- Adolf Rahe
- Advanced Air, Inc.
- Adventure Helicopter Rides
- Adventure Helicopter Tours
- Aerial Archives
- Aerial Films Inc.
- Aerial Firefighting Industry Association
- Aerial Patrol
- Aermarche
- Aero Asahi
- Aero Contractors of Nigeria
- Aero Marketing Group Ltd.
- Aero Products
- Aeroavia
- Aerocare
- AeroClub of Monaco
- Aerogulf Services Company (LLC)
- Aeroleo
- AeroMaritime America Inc.
- Aeromecanic
- Aerometals
- Aeronautica Militare (Italian Air Force)
- Aerospatiale Corporation
- Aerotex Aircraft Interiors
- Aeroval
- Aeroveneta
- Aetna Life Insurance Company
- Afghan Air Force
- Africair Inc.
- Ag Pilot International Magazine
- Agcopters
- Agrarflug-Helilift