| OSDR | Office for Student Disability Resources 
| Others |
| OSDR | Office of Student Development and Retention
| Others |
| OSDR | Offshore Safety Directive Regulator
| Others |
| OSDR | Open Science Data Repository
| Others |
| OSDR | Open Source Design Rationale
| Others |
| OSDR | Operational Safety of Dams and Reservoirs
| Others |
| OSDR | Operational Sensor Data Record
| Others |
| OSDR | Optical Space Domain Reflectometry
| Others |
| OSDR | Organization for Sustainable Development and Research
| Others |
| OSDR | Outdoor Software Defined Radio
| Others |
| OSDR | Outside Strategic Debt Restructuring
| Others |
| OSDR | Over Short and Damaged Report
| Others |
| OSDR | Overseas Screening Deficiency Report
| Others |