A-FSM
A-FSM stands for Adaptation Finite State Machine (algorithms)
A-G
A-G stands for Air-to-Ground
A-GNSS
A-GNSS stands for Assisted Global Navigation Satellite System (also seen as AGNSS)
A-GPS
A-GPS stands for Assisted Global Positioning System (used in mobile communications as a positioning system)
A-HEC
A-HEC stands for Alliance for Higher Education Competitiveness
A-HMIS
A-HMIS stands for Ayush Hospital Management Information System a (India)
A-HOUR
A-HOUR stands for Alert Hour
A-HPLD
A-HPLD stands for Atwood-Hammond Public Library District (Illinois)
A-I
A-I stands for General Audiences (Catholic movie rating)
A-II
A-II stands for Adults and Adolescents (Catholic movie rating)