| AOP | Abnormal Operating Procedure 
| Others |
| AOP | Academic Opportunity Program
| Others |
| AOP | Academic Orientation Program
| Others |
| AOP | Academy of the Pacific
| Others |
| AOP | Acces Opportunity Programs
| Others |
| AOP | Access Opportunity Programs
| Others |
| AOP | Accounting Operating Procedures
| Others |
| AOP | Acer Open Platform
| Others |
| AOP | Acknowledgement Of Paternity
| Others |
| AOP | Acknowledgment of Paternity
| Others |
| AOP | Acoustic Overload Point
| Others |
| AOP | Add On Profile
| Others |
| AOP | Add-On Pack
| Others |
| AOP | Additive Operational Product
| Others |
| AOP | Administrative and Operating Procedures
| Others |
| AOP | Adult Occupant Protection
| Others |
| AOP | Advance Online Publication
| Others |
| AOP | Advanced Observing Program
| Others |
| AOP | Advanced Opportunity Program
| Others |
| AOP | Advanced Oxidation Process
| Others |
| AOP | Advanced Oxidation Processes
| Others |
| AOP | Adverse Outcome Pathway
| Others |
| AOP | Adverse Outcome Pathways
| Others |
| AOP | Advice on People
| Others |
| AOP | Affiliate Outreach Project
| Others |
| AOP | Agent-Oriented Programming
| Others |
| AOP | Aglio Olio Peperoncino
| Others |
| AOP | Air Observation Post
| Others |
| AOP | Air Operating Permit
| Others |
| AOP | Air Operations Plan
| Others |
| AOP | Airborne Observation Platform
| Others |
| AOP | Alfred Osborn Pope
| Others |
| AOP | All Other Perils
| Others |
| AOP | All Over Print
| Others |
| AOP | Alpha Omega Publications
| Others |
| AOP | Already Over Promised
| Others |
| AOP | American Office Products
| Others |
| AOP | American Opera Project
| Others |
| AOP | American Opera Projects
| Others |
| AOP | aminooligopeptidase
| Others |
| AOP | aminooxypentane
| Others |
| AOP | An Original Poem
| Others |
| AOP | Anaemia Of Prematurity
| Others |
| AOP | Angel Of Players
| Others |
| AOP | Anime Ouen Project
| Others |
| AOP | Annals Of Pharmacotherapy
| Others |
| AOP | Annals of Probability
| Others |
| AOP | Annual Operating Plan
| Others |
| AOP | Annual Operating Plans
| Others |
| AOP | Annual Operating Priorities
| Others |
| AOP | Annual Operational Plan
| Others |
| AOP | Annual Operational Planning
| Others |
| AOP | Anomalistic Observational Phenomena
| Others |
| AOP | Antenna On Package
| Others |
| AOP | aortic blood pressure
| Others |
| AOP | APEX Office Print
| Others |
| AOP | Apple Oriented Programming
| Others |
| AOP | Apprenticeship Opportunities Project
| Others |
| AOP | Approved Operating Program
| Others |
| AOP | Area of Practice
| Others |
| AOP | Area Of Probability
| Others |
| AOP | Army Order of Precedence
| Others |
| AOP | Arrears Of Pay
| Others |
| AOP | Ask Our Pro
| Others |
| AOP | Ask Our Professionals
| Others |
| AOP | Aspect Oriented Programmation
| Others |
| AOP | Aspect Oriented Programming
| Others |
| AOP | Aspect-Oriented Programming
| Others |
| AOP | Assembly OPerations
| Others |
| AOP | Assistant Operator
| Others |
| AOP | Association of Office Professionals
| Others |
| AOP | Association of Online Professionals
| Others |
| AOP | Association of Online Publishers
| Others |
| AOP | Association of Optometrists
| Others |
| AOP | Association of Person
| Others |
| AOP | Association of Persons
| Others |
| AOP | Astra Otoparts
| Others |
| AOP | Attack on Principal
| Others |
| AOP | Authorized Operator
| Others |
| AOP | Automatic Operator
| Others |
| AOP | Autonomous Object Platform
| Others |
| AOP | Average Operating Pressure
| Others |
| AOP | Orphan Pharmaceuticals
| Others |
| AOP | Panamian Odontological Association
| Others |