| Acronym | Definition |
|---|
| OW➣Overwatch (game) |
| OW➣Office of Water |
| OW➣Old Welsh |
| OW➣Overweight |
| OW➣One Way |
| OW➣Oscar Wilde (poet) |
| OW➣Obwalden (Swiss Half Canton) |
| OW➣Oh Well |
| OW➣Oprah Winfrey |
| OW➣Oneworld (Airline Alliance) |
| OW➣Ontario Works |
| OW➣Old World |
| OW➣Other Woman |
| OW➣Outdoor World |
| OW➣Outer Worlds |
| OW➣Oddworld |
| OW➣Openwave (mobile phone browser) |
| OW➣Outer Wing |
| OW➣Olathe West (high school; Olathe, KS) |
| OW➣Optical Window |
| OW➣Open Wire |
| OW➣Outwar (game) |
| OW➣Ordinary Wave |
| OW➣Obstacle Warning |
| OW➣Old Wycliffian (Wycliffe College; UK) |
| OW➣Order-Wire |
| OW➣Optical Warning |
| OW➣Operating Wing |
| OW➣Overwriting Virus (virus scanners) |
| OW➣Only Widening |
| OW➣Oil-Immersed Water-Cooled |
| OW➣Open Along Word Lines |