| Acronym | Definition |
|---|
| OLR | Our Lady of the Rosary (various locations) |
| OLR | Office of Legislative Research (Connecticut) |
| OLR | Off Line Reader |
| OLR | Optical Line Repeater |
| OLR | on Line Resources |
| OLR | on Line Registration |
| OLR | on Line Reference |
| OLR | on Line Replacement |
| OLR | Office of Labor Relations |
| OLR | Organic Loading Rate |
| OLR | Offensive Line Rating (football statistic) |
| OLR | Outgoing Longwave Radiation |
| OLR | Office of Licensing and Registration (Maine) |
| OLR | Overload Relay |
| OLR | On-Line Registration |
| OLR | Overload Report |
| OLR | Offline Reader (computer conferencing) |
| OLR | Outgoing Long-Wave Radiation |
| OLR | One Life Revolution (AIDS; Malaysia) |
| OLR | Online Reconfiguration |
| OLR | Online Realty (Canada) |
| OLR | Online Replacement |
| OLR | Overall Loudness Rating |
| OLR | OverLooked Remix |
| OLR | Optical Label Reader |
| OLR | Outstanding Loss Reserve (insurance) |
| OLR | On Location Repair |
| OLR | Online Learning Record (various locations) |
| OLR | Open-Loop Resonator |
| OLR | On-Line Replaceable |
| OLR | Observation Location Refinement |
| OLR | Optical Label Remover |