| Acronym | Definition |
|---|
| OWR | Official World Record |
| OWR | Office of Water Resources (various locations) |
| OWR | Odenwaldwerke Rittersbach (German manufacturer) |
| OWR | Open Wheel Racing |
| OWR | Optical Word Recognition (iArchives) |
| OWR | Osler-Weber-Rendu Syndrome |
| OWR | Office of Water Regulation (Western Australia) |
| OWR | Ontario Wrestling Recap |
| OWR | Omega West Reactor |
| OWR | Office of Workforce Relations (US Office of Personnel Management) |
| OWR | Overview of World Religions (Religion and Philosophy department, university course) |
| OWR | Out of Warranty Repair |
| OWR | oil and water repellent (clothes, fabrics) |
| OWR | Optical Wavelength Router (Lightchip) |
| OWR | Operations Work Request (Sprint) |
| OWR | Optical Warning Receiver |
| OWR | Overdue Work Report |
| OWR | Open Water Regulator (SCUBA) |