A - Asterix 
ACE - Advanced Composition Explorer 
ACRIMSAT - Active Cavity Radiometer Ir… 
ACTS - Advanced Communications Test Sa… 
ADE - Atmospheric Dynamics Explorer 
ADEOS - Advanced Earth Observing Satel… 
AE - Atmospheric Explorer 
AEM - Applications Explorer Mission 
AGILE - Astro-rivelatore Gamma a Immag… 
AIM - Aeronomy of Ice in the Mesospher… 
AIMP - Anchored Interplanetery Monitor… 
ALEXIS - Array of Low-Energy X-ray Ima… 
ALOS - Advanced Land Observing Satelli… 
AlSat - Algeria Satellite 
AMOS - Affordable Modular Optimized Sa… 
AMPTE - Active Magnetospheric Particle… 
AMS - Advanced Meteorological Satellit… 
AMSAT - Amateur Satellite 
ANNA - Army, Navy, NASA and Air Force 
ANS - Astronomical Netherlands Satelli… 
AOSO - Advanced Orbiting Solar Observa… 
APPLE - Ariane Passenger PayLoad Exper… 
Apstar - Asia Pacific Star 
Arabsat - Arab Satellite 
ARABSAT - Arabian Satellite 
ARCAD - ARCtic Aurora Density 
ARGOS - Advanced Research Global Obser… 
ASC - American Satellite Company 
ASCA - Advanced Satellite for Cosmolog… 
AsiaSat - ASIA SATellite