| Term | Full Form | Category |
|---|---|---|
| RIOP | Radiation induced organizing pneumonia | Others |
| RIOP | Regular Investment Opportunity Plan | Others |
| RIOP | Research Integrity and Oversight Programs | Others |
| RIOP | Revised Interim Operations Plan | Others |
| RIOP | Rhode Island Organizing Project | Others |
| RIOP | Rocks In Our Pockets | Others |
| RIOP | Rural Idaho Outreach Partners | Others |
| RIOP | Rural Idaho Outreach Program | Others |