| Armadillo Aerospace (Armadillo) |
 United States |
Commercial |
2000 |
0 |
0 |
0 |
| Armed Forces of Ukraine (Ukraine) |
 Ukraine |
Government / agency |
1991 |
0 |
0 |
0 |
| Armenian Air Defence (Armenian Air Def.) |
 Armenia |
Government / agency |
|
0 |
0 |
0 |
| Armstrong Siddeley (Armstrong Sid.) |
 United Kingdom |
Commercial |
1919 |
0 |
0 |
0 |
| Army Ballistic Missile Agency (ABMA) |
United States |
Government / agency |
|
0 |
0 |
1 |
| Arrow Science and Technology (Arrow Sci Tech) |
United States |
Commercial |
2007 |
0 |
0 |
0 |
| Arthur C. Clarke Institute for Modern Technologies (ACCIMT) |
 Sri Lanka |
Government / agency |
1984 |
0 |
0 |
0 |
| Asgardia Space (Asgardia) |
 Austria |
Academic / research |
2016 |
0 |
0 |
0 |
| Asia Pacific (AP) Aerospace Inc. (AP Aerospace) |
 South Korea |
Commercial |
2012 |
0 |
0 |
0 |
| Asia Pacific Multilateral Cooperation in Space Technology and Applications (AP-MCSTA) |
 China |
International organisation |
|
0 |
0 |
0 |
| Asia-Pacific Regional Space Agency Forum (APRSAF) |
 France |
International organisation |
|
0 |
0 |
0 |
| Asia-Pacific Space Cooperation Organization (APSCO) |
 Italy |
International organisation |
|
0 |
0 |
0 |
| Asia-Pacific Space Cooperation Organization (APSCO) |
China |
Government / agency |
2005 |
0 |
0 |
0 |
| Assam Don Bosco University (Don Bosco U.) |
 India |
Academic / research |
2008 |
0 |
0 |
0 |
| Astrium (D), Bremen (Astrium) |
 Germany |
Commercial |
2000 |
0 |
0 |
0 |
| Astrium (D), Friedrichshafen (Astrium-Frh.) |
Germany |
Commercial |
2000 |
0 |
0 |
0 |
| Astrium (D), Lampoldshausen (Astrium/Lamp.) |
Germany |
Commercial |
1996 |
0 |
0 |
0 |
| Astrium (F) Toulouse (Astrium/Toulouse) |
France |
Commercial |
2000 |
0 |
0 |
0 |
| Astrium Satellites (EADS) |
France |
Commercial |
2014 |
0 |
0 |
0 |
| Astrium Space Propulsion/Ottobrunn (Astrium/Ottobrunn) |
Germany |
Commercial |
2006 |
0 |
0 |
0 |
| Astrix Astronautics (Astrix) |
 New Zealand |
Commercial |
2021 |
0 |
0 |
0 |
| Astro Live Experiences Co. Ltd. (ALE) |
 Japan |
Commercial |
|
0 |
0 |
0 |
| Astro-und-Feinwerktechnik Adlershof GmbH (Astrofein Technik) (AstroFein) |
Germany |
Commercial |
2009 |
0 |
0 |
0 |
| AstroBerry Ltd. (AstroBerry) |
 Thailand |
Commercial |
2018 |
0 |
0 |
0 |
| Astrobotic Technology Inc. (Astrobotic) |
United States |
Commercial |
2007 |
0 |
0 |
0 |
| Astrodyne Inc. (Phillips/NAA) (Astrodyne) |
United States |
Commercial |
1958 |
0 |
0 |
0 |
| AstroForge (AstroForge) |
United States |
Commercial |
2022 |
0 |
0 |
0 |
| Astronautic Technology (M) Sdn Bhd (ATSB) |
 Malaysia |
Commercial |
|
0 |
0 |
0 |
| Astronautic Technology Sdn Bhd (ATSB) |
Malaysia |
Commercial |
|
0 |
0 |
0 |
| Astronomy and Space Physics Instiute (IAFE-BA) |
 Argentina |
Government / agency |
1971 |
0 |
0 |
0 |
| Astrotech Corp. (Astrotech) |
United States |
Commercial |
1984 |
0 |
0 |
0 |
| AT&T Alascom (AT&T Alascom) |
United States |
Commercial |
1995 |
0 |
0 |
0 |
| Atal Incubation Centre - Dayanand Sagar University (AIC-DSU) |
India |
Academic / research |
2023 |
0 |
0 |
0 |
| Atlantic Research Corp. (Alexandria) (ARC) |
United States |
Commercial |
1951 |
0 |
0 |
0 |
| Atlantic Research Corp. (Camden) (ARC Camden) |
United States |
Commercial |
|
0 |
0 |
0 |
| Atlantic Research Corp. (Liquid Propulsion Div). (ARC Corp) |
United States |
Commercial |
1998 |
0 |
0 |
0 |
| Atlantic Research Corp. (Solid Propulsion Div). (ARC Corp) |
United States |
Commercial |
1951 |
0 |
0 |
0 |
| Atlantic Research Corp. Missile Systems (Aerolab) (ARC Monrovia) |
United States |
Commercial |
1967 |
0 |
0 |
0 |
| Atlantic Research Corp. Missile Systems Div. (ARC MSD) |
United States |
Commercial |
1967 |
0 |
0 |
0 |
| Atlantic Research Corp. UK (RO) |
United Kingdom |
Government / agency |
1998 |
0 |
0 |
0 |
| ATMOS Space Cargo (ATMOS) |
Germany |
Commercial |
2022 |
0 |
0 |
0 |
| Atmospheric and Space Technology Research Associates LLC (Astra LLC) |
United States |
Commercial |
2007 |
0 |
0 |
0 |
| Atmospheric Environment Service, Dept. of the Environment (AES) |
 Canada |
Government / agency |
1971 |
0 |
0 |
0 |
| Atomic Energy and Alternative Energy (ENEA) |
Italy |
Government / agency |
1982 |
0 |
0 |
0 |
| Atsushi Tamura's Space Challege '24 (ASC 24) |
Japan |
Academic / research |
2024 |
0 |
0 |
0 |
| Auckland Programme for Space Systems, University of Auckland (APSS) |
New Zealand |
Academic / research |
2016 |
0 |
0 |
0 |
| Aurora Flight Sciences/Payload Systems, Inc. (Payload Systems) |
United States |
Commercial |
2007 |
0 |
0 |
0 |
| Aurora Propulsion Technologies OY (Aurora PT) |
 Finland |
Commercial |
2018 |
0 |
0 |
0 |
