| Acronym | Definition |
|---|
| IOR➣Instituto de Obras Para la Religión (Spanish: Institute for Works of Religion) |
| IOR➣Index of Reliability |
| IOR➣Instructor of Record (various universities) |
| IOR➣Interoperable Object Reference |
| IOR➣Interorganizational Relationship |
| IOR➣Istituto Ortopedico Rizzoli (Rizzoli Orthopaedic Institute, Italy) |
| IOR➣Ibm Onsite Repair |
| IOR➣Input Output Register |
| IOR➣Input Output Real |
| IOR➣Input Output Read |
| IOR➣Input Output Resource |
| IOR➣Index of Refraction |
| IOR➣Institute of Recruiters (UK) |
| IOR➣Inclusive Or |
| IOR➣Indian Ocean Rim |
| IOR➣Improved Oil Recovery |
| IOR➣Institute of Refrigeration (UK) |
| IOR➣Inhibition of Return |
| IOR➣Indian Ocean Region |
| IOR➣Importer of Record (customs) |
| IOR➣Increased Oil Recovery |
| IOR➣Istituto Per Le Opere Di Religione (Vatican Bank) |
| IOR➣International Osteopathic Research (France) |
| IOR➣International Offshore Rule (sailing) |
| IOR➣Inspector of Record (construction term) |
| IOR➣Indian Other Rank |
| IOR➣Independent Order of Rechabites (est. 1835) |
| IOR➣Impact of Relationship (social media) |
| IOR➣Institute of Operational Risk |
| IOR➣International Orientation Resources |
| IOR➣Ideas of reference |
| IOR➣Immediate Operational Requirement |
| IOR➣Initial Operating Report (US FEMA) |
| IOR➣Interobserver Reliability |
| IOR➣Input/Output Read |
| IOR➣International Ocean Racing (Association) |
| IOR➣Industry Optic Romania |
| IOR➣Investigator of Record |
| IOR➣Institute of Religion |
| IOR➣Intelligent Office Repeater |
| IOR➣Increment Operations Review |
| IOR➣Indicated Outcome Report |
| IOR➣Issue on Request |
| IOR➣Isle of Rhythm (Belgian music event) |
| IOR➣Issue On Requisition |