| Acronym | Definition |
|---|
| RAD | Rapid Application Development (software development) |
| RAD | Reactive Airway Disease (asthma) |
| RAD | Radiate/Radiation |
| RAD | Radio |
| RAD | Radius |
| RAD | Radial (street suffix) |
| RAD | Radical (mathematics) |
| RAD | Research and Development |
| RAD | Radians (measure of angle) |
| RAD | Rational Application Developer (IBM) |
| RAD | Rape Aggression Defense |
| RAD | Reactive Attachment Disorder (sometimes found in abused and/or adopted children) |
| RAD | Robot Alchemic Drive (video game) |
| RAD | Royal Academy of Dance |
| RAD | Radiation Absorbed Dose |
| RAD | Ropeadope (records and radio) |
| RAD | Reichsarbeitsdienst (Labor Service of the German Third Reich) |
| RAD | Requirements Analysis and Design |
| RAD | Royal Association for Deaf People (UK) |
| RAD | Rules for Archival Description (Canadian rules for organisation of archives) |
| RAD | Resource Access Decision |
| RAD | Rijksarchiefdienst |
| RAD | Rainbow Alliance of the Deaf |
| RAD | Read All Day |
| RAD | Right Axis Deviation (electrocardiogram) |
| RAD | Race Against Drugs |
| RAD | Reconnaissance Automatique de Documents (French: Automatic Document Recognition) |
| RAD | Rapid Access Disk |
| RAD | Roentgen Absorbed Dose |
| RAD | Respiratory Assist Device (medical) |
| RAD | Random Access Data |
| RAD | Return to Active Duty |
| RAD | Recorded Announcement Device (telecommunications) |
| RAD | Remote Antenna Driver |
| RAD | Reprogrammable Application Device |
| RAD | Relative Average Deviation |
| RAD | Retiree Activity Day |
| RAD | Receive Antenna Diversity |
| RAD | Required Availability Date |
| RAD | Request for Authority to Develop |
| RAD | Requirements Allocation Document |
| RAD | Reckless and Deadly (Raven Shield and Battlefield 2 gaming clan) |
| RAD | Rite Aide Corporation (stock symbol) |
| RAD | Revised Alternative Dataflow (US Navy) |
| RAD | Requirements and Architecture Design |
| RAD | Random Agile Deinterleaver |
| RAD | Rapid And Disciplined |
| RAD | Resource Allocation Display |
| RAD | Recommendation and Approval Document |
| RAD | Roughneck Airsoft Detachment |
| RAD | Regional Accountable Depot |
| RAD | Random Access Drive |
| RAD | Realtime Agent Developer (Open Networks Engineering) |
| RAD | Real-time Active Display |
| RAD | Requirements Approval Document (US Air Force) |
| RAD | Reverse Angle Doctorblade (flexographic printing) |
| RAD | Release/d from Active Duty |
| RAD | Revised Acronym Dictionary |
| RAD | Remote Administration Device |
| RAD | Resource Availability Determination |
| RAD | Rural Action for Development |