| IDRA | Ideal Resource Allocation 
| Others |
| IDRA | Idera Pharmaceuticals
| Others |
| IDRA | Independent Desert Racers Association
| Others |
| IDRA | Industrial Development Regulation Act
| Others |
| IDRA | Infectious Disease Risk Assessment
| Others |
| IDRA | Institute for Development Research and Alternatives
| Others |
| IDRA | Insurance Development and Regulatory Authority
| Others |
| IDRA | Intercultural Development Research Association
| Others |
| IDRA | Interior Department Recreation Association
| Others |
| IDRA | Intermediate Data Recovery and Analysis
| Others |
| IDRA | Intermediate Data Recovery and Analysis course
| Others |
| IDRA | International Digital Radio Association
| Others |
| IDRA | International Disaster Recovery Association
| Others |
| IDRA | International Drone Racing Association
| Others |
| IDRA | International Drowning Researcher Alliance
| Others |
| IDRA | Island Drag Racing Association
| Others |
| IDRA | Italian Drag Racing Association
| Others |