| Acronym | Definition |
|---|
| OWA | One World Archaeology (book series) |
| OWA | Outlook Web Access |
| OWA | Other Way Around (software) |
| OWA | One-Winged Angel (Final Fantasy VII boss) |
| OWA | Open World Assumption (formal logic) |
| OWA | Offshore Wind Accelerator |
| OWA | Oracle Web Agent |
| OWA | Open Wireless Architecture |
| OWA | One Way Audio |
| OWA | One Winged Angel (band) |
| OWA | Orange Winged Amazon (bird species) |
| OWA | Ordered Weighted Averaging |
| OWA | Oregon Winegrowers' Association (Portland, OR) |
| OWA | Ocean Works Asia, Inc. |
| OWA | Oracle Web Agent (Oracle database software) |
| OWA | Opiate Withdrawal Assessment |
| OWA | Oriental Weavers of America |
| OWA | Organization of Women Architects and Design Professionals |
| OWA | OneWorld Africa (OneWorld International; Zambia) |
| OWA | Optimized Wideband Antenna (NW3Z) |
| OWA | Old West Austin (Austin, TX) |
| OWA | Owatonna Wrestling Association (Owatonna, MN) |
| OWA | Oregon Whitewater Association (Oregon) |
| OWA | Old Wrekinian Association |