| AAD | Ability Anomic Disorder 
| Others |
| AAD | Absolute Average Deviation
| Others |
| AAD | Academic and Athletic Development
| Others |
| AAD | Accelerated Alternate Delivery
| Others |
| AAD | Accelerated Alternative Delivery
| Others |
| AAD | Access to Archival Database
| Others |
| AAD | Access to Archival Databases
| Others |
| AAD | Action Against Drugs
| Others |
| AAD | Active Acoustic Device
| Others |
| AAD | Active Area definitions
| Others |
| AAD | Acute Aortic Dissection
| Others |
| AAD | Ad Altare Dei
| Others |
| AAD | Adado Airport
| Others |
| AAD | Adaptive Aerosol Delivery
| Others |
| AAD | Additional Authenticated Data
| Others |
| AAD | Additional Authorized Driver
| Others |
| AAD | Adjoint Algorithmic Differentiation
| Others |
| AAD | Advanced Agile Device
| Others |
| AAD | Advanced Agility Dog
| Others |
| AAD | Advanced Air Defence
| Others |
| AAD | Advanced Animal Diagnostics
| Others |
| AAD | Advanced Automotive Design
| Others |
| AAD | Africa Aerospace and Defence
| Others |
| AAD | Africa Aerospace Defence
| Others |
| AAD | African Aerospace and Defence
| Others |
| AAD | African American Democrat
| Others |
| AAD | Agent Asset Development
| Others |
| AAD | Airborne Accuracy Designator
| Others |
| AAD | Airsoft Action Disciplines
| Others |
| AAD | Alhaji Abubakar Darbo
| Others |
| AAD | All About Datsun
| Others |
| AAD | All About Design
| Others |
| AAD | Alter All Data
| Others |
| AAD | Alternative Artifical Digestion
| Others |
| AAD | Alternative Artificial Digestion
| Others |
| AAD | American Academy of Dermatology
| Others |
| AAD | Analog Alignment Diskette
| Others |
| AAD | Analog Analog Digital
| Others |
| AAD | Analogue Analogue Digital
| Others |
| AAD | Anibal Automotive Design
| Others |
| AAD | Animation Audio Design
| Others |
| AAD | Annual Aggregate Deductible
| Others |
| AAD | Anti-Anxiety Detoxification
| Others |
| AAD | Antibiotic-Associated Diarrhea
| Others |
| AAD | Application Architecture Design
| Others |
| AAD | Applied Acoustic Design
| Others |
| AAD | Applied Art and Design
| Others |
| AAD | Architecture And Design
| Others |
| AAD | Arkansas Agriculture Department
| Others |
| AAD | Armoured Amphibious Dozer
| Others |
| AAD | Army Air Defence
| Others |
| AAD | Army Air Defense
| Others |
| AAD | Art Architecture and Design
| Others |
| AAD | ASCII Adjust before Division
| Others |
| AAD | ASCII Adjust for Division
| Others |
| AAD | Assessment of Active Devices
| Others |
| AAD | Associate Android Developer
| Others |
| AAD | Associated Automotive Distributors
| Others |
| AAD | Attacking Air Defence
| Others |
| AAD | Attitude Anomaly Detector
| Others |
| AAD | Attitude in advance of Ad
| Others |
| AAD | Auctioned Alliance Destruction
| Others |
| AAD | Australian Antarctic Division
| Others |
| AAD | Australian Automotive Distribution
| Others |
| AAD | Authorized Autocad Dealer
| Others |
| AAD | Authors After Dark
| Others |
| AAD | Autodesk Architectural Desktop
| Others |
| AAD | Autoimmune Autistic Disorder
| Others |
| AAD | Automatic Activation Device
| Others |
| AAD | Automotive Aftermarket Division
| Others |
| AAD | Automotive Analysis Division
| Others |
| AAD | Auxiliary Air Control Device
| Others |
| AAD | Average Absolute Deviation
| Others |
| AAD | Average Absolute Difference
| Others |
| AAD | Awful Agency Disease
| Others |
| AAD | Ayutt and Associates design
| Others |
| AAD | Azure Active Directory
| Others |