AAPCO 
Abbreviated Acquisition Program 
Abbreviated Acquisition Programs 
Academic Achievement Programs 
Academy of Pediatrics 
Academy of Periodontology 
acetaminophen 
Active Anti-Psychotronic 
Additional Attendant Panel 
Address Allocation Protocol 
Adelaide Activities Profile 
Adjunct Associate Professor 
adoption assistance program 
Adult Asthma Program 
ADVANCE AUTO PARTS INC 
Advanced Acquisition Plan 
Advanced Adaptive Protocol 
Advanced Application Package 
Advanced Architecture Paging 
Advanced Automation Program 
Aeromonas proteolytica 
Aerovista Airlines 
Affirmative Action Plan 
Affirmative Action Program 
Aft Attendant Panel 
aggregation-attachment pheromone 
Aging Aircraft Program 
air at atmospheric pressure 
Air to air Missile 
Airborne Acoustic Processor