| viz. | A |
| 2007-013B | AAM |
| 2000-059A | AAP-1 |
| 1966-048B | AAS-6 |
| 2003-031G | AAU CubeSat |
| 1959-004A | Able 3 |
| 1960-001A | Able 6 |
| 1999-022A | ABRIXAS |
| viz. | ABS [=Asia Broadcast Satellite] |
| 1997-045A | ACE |
| 2000-011A | ACeS-1 |
| 1999-070B | ACRIMSAT |
| 1993-058B | ACTS |
| 1968-066A | AD-C |
| 1968-066A | AD-E (Explorer 39) |
| 1963-053A | ADE-B |
| 1964-076A | ADE-C |
| 1996-046A | ADEOS |
| 2002-056A | ADEOS-2 |
| viz. | Advanced Orion |
| viz. | Advanced Vortex |
| viz. | AE |
| 2010-039A | AEHF-1 |
| viz. | AEM |
| 2007-012F | AeroCube 2 |
| 2009-028E | AeroCube 3 |
| 1963-009A | Aeronomy Explorer 1 |
| 1966-044A | Aeronomy Explorer 2 |
| 1973-101A | Aeronomy Explorer 3 |
| 1972-100A | Aeros 1 |
| 1974-055A | Aeros 2 |
| 1974-055A | Aeros B |
| 1963-026A | AFCRL-A |
| viz. | AFP-201 |
| viz. | AFP-206 |
| viz. | AFP-366 |
| 1966-089A | AFP-461 F-3 |
| 1966-051A | AFP-461 F-1 |
| 1966-077A | AFP-461 F-2 |
| 1989-061B | AFP-658 (USA 40) |
| 1990-097B | AFP-658 (USA 67) |
| 1970-046A | AFP-720 F-1 |
| 1973-013A | AFP-720 F-2 |
| 1989-061B | AFP-731 F-1 (USA 40) |
| 1990-019B | AFP-731 F-2 (USA 53) |
| 1972-101A | AFP-827 |
| 1975-055A | AFP-827 F-6 |
| 1968-063A | AFP-949 F-1 |
| 1996-002B | AfricaSat-1 |
| 1996-063B | AfricaSat-2 |
| 1996-002B | AfriSat-1 |
| 1996-063B | AfriSat-2 |
| 1998-063A | AfriStar |
| 2005-011A | AFRL-0003 |
| viz. | Agena |
| 2009-038B | AggieSat 2 |
| 1987-029A | Agila 1 |
| 1997-042A | Agila 2 |
| 2007-013A | AGILE |
| 2007-015A | AIM |
| 1966-058A | AIMP-1 |
| 1967-070A | AIMP-2 |
| 1967-070A | AIMP-E |
| viz. | Air |
| 2010-035C | AISSat-1 |
| 1986-061A | Ajisai |
| 2010-020D | Akacuki |
| 2006-005A | Akari |
| 2010-020D | Akatsuki |
| 1989-016A | Akebono |
| 1989-080A | Aktivnyj-IK |
| 1993-026A | Alexis |
| 1976-057A | Almaz 3 |
| 1991-024A | Almaz-1 |
| 2006-002A | ALOS |
| 1962-049A | Alouette 1 |
| 1965-098A | Alouette 2 |
| 2002-054A | AlSat-1 |
| 2010-035D | AlSat-2A |
| 2004-031A | Amazonas |
| 2009-054A | Amazonas 2 |
| viz. | AMC |
| 1972-096A | America |
| viz. | Americom |
| viz. | Amos |
| 1984-088A | AMPTE-1 |
| 1984-088B | AMPTE-2 |
| 1984-088C | AMPTE-3 |
| viz. | AMS [=Advanced Meteorological Satellite] |
| viz. | AMS Luna [=Avtomatičeskaja mežplanetarnaja stancija] |
| 2000-072D | Amsat P3D |
| 2004-025K | Amsat-Echo |
| 2005-035C | Amsat-Oscar 54 |
| 1995-019A | AMSC-1 |
| 1999-001A | Amundsen |
| 1996-006A | Anatolia 1 |
| viz. | ANDE |
| 2001-048A | Andromede |
| viz. | Anik |
| 1962-060A | ANNA 1B |
| 1974-070A | ANS-1 |
| 1971-008C | Antares |
| 2009-019B | Anusat |
| viz. | AO |
| 1991-086A | Apex |
| 1994-046A | Apex-1 |
| 1963-038C | APL SN-39 |
| 1963-049C | APL SN-41 |
| viz. | Apollo |
| 1981-057B | Apple |
| viz. | AprizeSat |
| viz. | Apstar |
| 2002-022A | Aqua |
| 1977-114A | Aquacade 3 |
| 1978-038A | Aquacade 4 |
| 1970-029A | Aquarius (Apollo) |
| 2011-024A | Aquarius (ocean salinity) |
| 2011-024A | Aquarius/SAC-D |
| viz. | Arabsat |
| 1988-104A | Aragatz |
| viz. | Argon |
| 1999-008A | Argos |
| 1975-033A | Ariabata |
| viz. | Ariel |
| 1999-070A | Arirang 1 |
| 2006-031A | Arirang 2 |
| 1993-031B | Arsene |
| 2001-029A | Artemis |
| 2007-004B | Artemis P1 |
| 2007-004C | Artemis P2 |
| 1975-033A | Aryabhata |
| 1967-113A | AS-501 |
| 1985-076C | ASC-1 |
| 1991-028A | ASC-2 |
| 1993-011A | ASCA |
| viz. | Asiasat |
| 2000-016A | AsiaStar |
| 1993-011A | Aska |
| 1965-096A | Astérix 1 |
| 1971-089A | ASTEX-1 |
| 1975-066A | ASTP |
| viz. | Astra |
| 1995-002B | Astrid 1 |
| 1998-072B | Astrid 2 |
| viz. | Astro |
| 2007-006A | ASTRO (Orbital Express 1A) |
| 1983-020A | Astron |
| 1993-011A | Asuka |
| 2000-004E | ASUSat-1 |
| 1967-120A | ATCOS 2 |
| 1966-046A | ATDA |
| 1998-055C | ATEx |
| 1967-026A | Atlantic 2 |
| viz. | Atlantic Bird |
| viz. | Atlantis |
| 1963-047A | Atlas Centaur 2 |
| 1964-082A | Atlas Centaur 4 |
| 1992-015A | ATLAS-1 |
| 1990-081B | Atmosphere 1A (DQ-1A) |
| 1990-081C | Atmosphere 1B (DQ-1B) |
| 1975-096A | Atmosphere Explorer 2 |
| 1975-107A | Atmosphere Explorer 3 (Explorer 55) |
| 1975-107A | Atmosphere Explorer 5 |
| 1963-009A | Atmospheric Explorer 1 |
| 1966-044A | Atmospheric Explorer 2 |
| 1973-101A | Atmospheric Explorer 3 |
| viz. | ATS |
| 2008-008A | ATV-1 "Jules Verne" |
| 2011-007A | ATV-2 "Johannes Kepler" |
| 2011-061C | AubieSat-1 |
| 1975-092A | Aura |
| 2004-026A | Aura |
| 1971-119A | Aureole 1 |
| 1973-107A | Aureole 2 |
| 1981-094A | Aureole 3 |
| viz. | Aurora |
| 1968-084A | Aurorae |
| viz. | Aussat |
| 1991-069A | Austromir |
| viz. | AVL-802 |
| 1999-040B | AXAF |
| 1979-009A | Ayame 1 |
| 1980-018A | Ayame 2 |
| 1969-097A | Azur 1 |