-
Office Of Aviation Policy And Plans
governmental | transportation
-
Authorized Personnel Only
business | general
-
Advanced Planner Optimizer
academic & science | amateur radio
-
Atmospheric Potential Oxygen
academic & science | meteorology
-
Armenian Philharmonic Orchestra
community | music
-
Asas (all-source Analysis System) Project Office
governmental | military
-
academic & science | ocean science
-
Alcohol Procurement Officer
business | occupation & positions
-
African People's Organisation
regional | african
-
governmental | military
-
computing | hardware
-
miscellaneous | unclassified
-
governmental | military
-
medical | british medicine
-
Apprentice Police Officer
business | occupation & positions
-
medical | physiology
-
Agency Procurement Officer
community | educational
-
African Press Organization
regional | african
-
Auckland Philharmonia Orchestra
miscellaneous | unclassified
-
business | accounting
-
Accountable Property Officer
business | occupation & positions
-
academic & science | students
-
Authorized Personnel Only
governmental | nasa
-
regional | airport codes
-
Afloat Pre-positioning Operation
governmental | military
-
Abductor Pollicis Obliquus
medical | british medicine
-
Asian Productivity Organization
miscellaneous | unclassified
-
miscellaneous | unclassified
-
medical | british medicine
-
Army/air Force Post Office
governmental | us government
-
Advanced Planning Optimizer
business | stock exchange
-
Adriamycin, Predisone, Oncovin
medical | british medicine
-
academic & science | universities
-
Authorized Personnel Only
business | companies & firms
-
Autonomous Provider Organisation
medical | british medicine
-
Amateur Philatelists Organization
miscellaneous | hobbies
-
Autonomous Period Of Operation
medical | british medicine
-
miscellaneous | unclassified
-
business | general
-
Advanced Planner And Optimizer
computing | software
-
Adverse Pregnancy Outcome
medical | british medicine
-
Authorized Personnel Only
governmental | military
-
American Community Properties Trust
business | amex symbols
-
miscellaneous | usps