| Acronym | Definition |
|---|
| OIR➣Online Image Resizer |
| OIR➣Operation Inherent Resolve (combat operations) |
| OIR➣Optical-Infrared (astronomy) |
| OIR➣Oxford International Review (journal; UK) |
| OIR➣Office of Insurance Regulation |
| OIR➣Order Instituting Rulemaking (California) |
| OIR➣Office of Institutional Research |
| OIR➣Occupational Injury Rate (workers) |
| OIR➣Online Insertion and Removal (Cisco) |
| OIR➣Online Information Review (journal) |
| OIR➣Old Irish |
| OIR➣Oracle I-Recruitment |
| OIR➣Object Information Repository |
| OIR➣Online Insertion and Removal |
| OIR➣Operational Intelligence Requirements (US DoD) |
| OIR➣Office of International Research (various locations) |
| OIR➣Office of Independent Review (Los Angeles County, California) |
| OIR➣Office of Information Resources |
| OIR➣Office of Instructional Resources |
| OIR➣Office of Intramural Research |
| OIR➣Other Intelligence Requirements (US DoD) |
| OIR➣Official International Rules (Mahjong) |
| OIR➣Optical Interface Rates |
| OIR➣Organización Internacional Para Los Refugiados (Spanish: International Organization for Refugees; UN) |
| OIR➣Office of Internal Review |
| OIR➣Organization for Industrial Research |
| OIR➣Optimal Information Rate |
| OIR➣Oxford Investment Research (UK) |
| OIR➣Other Information Requirement |
| OIR➣Official International Reserves (Department of Finance; Canada) |
| OIR➣Operational & Information Requirements |