| AR&D | Automotive Research and Design 
| Others |
| AR&D | Automotive Research and Development
| Others |
| ARD | Abi Respondents Database
| Others |
| ARD | Accelerated Rehabilative Disposition
| Others |
| ARD | Accelerated Rehabilitation Disposition
| Others |
| ARD | Accelerated Rehabilitative Disposition
| Others |
| ARD | Acceptance Responsibility and Defenselessness
| Others |
| ARD | Accounting Reference Date
| Others |
| ARD | Accounting Research Division
| Others |
| ARD | Acid Reflux Disease
| Others |
| ARD | Acid Rock Drainage
| Others |
| ARD | Acoustic Research Detachment
| Others |
| ARD | Active Rear Differential
| Others |
| ARD | Acute Respiratory Disease
| Others |
| ARD | Acute Respiratory Distress
| Others |
| ARD | Adac Rallye Deutschland
| Others |
| ARD | Addiction Recovery of the Deaf
| Others |
| ARD | Admission Review And Discussion
| Others |
| ARD | Admission Review And Dismisal
| Others |
| ARD | Admission Review And Dismiss
| Others |
| ARD | Admission Review and Dismissal
| Others |
| ARD | Admission Review Dismissal
| Others |
| ARD | Admission Review or Dismissal
| Others |
| ARD | Admission, Review, and Dismissal
| Others |
| ARD | Admissions Review And Dismissal
| Others |
| ARD | Adult Refsum disease
| Others |
| ARD | Advance Registration Deposit
| Others |
| ARD | Advanced Running Development
| Others |
| ARD | Aerosol Solid with Adapter
| Others |
| ARD | Agricultural Research Division
| Others |
| ARD | Agricultural Research for Development
| Others |
| ARD | Air Radiation Division
| Others |
| ARD | Alberta Reinforcement Depot
| Others |
| ARD | Alcohol Related Dementia
| Others |
| ARD | Alcohol-Related Dementia
| Others |
| ARD | All Ready Did
| Others |
| ARD | Alternative Rehabilitative Disposition
| Others |
| ARD | Alumnae Regional Director
| Others |
| ARD | America Recycles Day
| Others |
| ARD | Analysis Ready Data
| Others |
| ARD | And Related Diseases
| Others |
| ARD | Annals of the Rheumatic Diseases
| Others |
| ARD | Anniversary Rating Date
| Others |
| ARD | Annual Renewal Demand
| Others |
| ARD | Annual Reset Date
| Others |
| ARD | Annual Review and Determination
| Others |
| ARD | Annual Review Database
| Others |
| ARD | Anthropology Review Database
| Others |
| ARD | Anticipated Repayment Date
| Others |
| ARD | Apple Remote Desktop
| Others |
| ARD | Appliance for Ringo Detonation
| Others |
| ARD | Application Remote Database
| Others |
| ARD | Architecture Requirement Document
| Others |
| ARD | Armenian Road Directorate
| Others |
| ARD | Around
| Others |
| ARD | Ascii Region Definition
| Others |
| ARD | Asociatia Romana de Drift
| Others |
| ARD | Assessment Reference Date
| Others |
| ARD | Associate Regional Director
| Others |
| ARD | Associates in Rural Development
| Others |
| ARD | Association of Research Directors
| Others |
| ARD | At Risk Driver
| Others |
| ARD | Augmented Reality Display
| Others |
| ARD | Auto Retro du Don
| Others |
| ARD | Automatic Rescue Device
| Others |
| ARD | Automatic Ring Down
| Others |
| ARD | Automatic Round Damper
| Others |
| ARD | Auxiliary Repair Dock
| Others |
| ARD | Auxiliary Repair Drydock
| Others |
| ARD | Auxiliary, Repair, Dry dock
| Others |
| ARD | Aviation Recreation Design
| Others |