| Acronym | Definition |
|---|
| ONW➣Olathe Northwest (school; Olathe, KS) |
| ONW➣Operation Northern Watch |
| ONW➣On Watch |
| ONW➣omit needless words (Strunk and White) |
| ONW➣omit needless words |
| ONW➣Old Norwegian (linguistics) |
| ONW➣Overshoot Noise Width |
| ONW➣Orthopedics Northwest (Washington) |