APA
APA most often denotes the leading U.S. professional societies in psychology and psychiatry, and it also stands for the federal Administrative Procedure Act governing agency rulemaking.
Medical
Miscellaneous
Aerial Photograph Atlas
Auxillary Personal Attack
Application Previously Approved
Automated Password Agent
American Poultry Association
Auto Port Aggregation
Azirian Phonetic Alphabet
Amys Pokemon Adventure
Any Pocket Any
As Per Actual
American Pale Ale
Ashley Parker Angel
Attack Transport (Auxiliary, Personnel, Attack)
Animal Protective Association
American Photographic Artists
Community
Administrative Procedures Act
Amateur Press Association
Association of Parents of Addicts
Academics for Proper Attribution
Aborigines Progressive Association
Amatuer Press Assciation
Adirondack Park Agency
American Philological Association
American Philosophical Association
Allied Pilots Association
Agency for the Performing Arts
Automobile Protection Association
Governmental
Advanced Processor Assembly
All Points Addressable
Army Procurement Agency
Administrative Procedure Act
Alaska Power Administration
Allowance for Project Adjustment
Animal Products Act
Asian Pacific American
Administrative Process Act
Association of Police Authorities
Área de Proteço Ambiental (Environmental Protection Zone)
Advance Procurement Authorization
Army Pre-positioned Afloat
International
Agrupaciones de Productores Agrarios
Asociación de Periodistas Argentinos
Asociación de Protección a las Adolescentes
Academic & Science
Advanced Performance Algorithm
Alkaline Phosphatase Activity
Automatic Panel Alignment
American Psychological Assosiation
American Phonetic Alphabet
Australian Postgraduate Award
American Psychiatric Association
Regional
Computing
Business
Apache Corporation
American Psychological Association
American Psychology Association
American Plywood Association
The Acolyte Protection Agency
Advance Pricing Agreement
American Payroll Association
Allied Professional Association
The Acolytes Protection Agency
Axxess Protection Agency
American Planning Association
Association of Paper Archivists
American Parquet Association
Architectural Precast Association
Australian Pipeline Trust
American Psychoanalytic Association
Amateur Publication Association
Alaska Packers Association
American Psyciatric Association
Association of Practising Accountants