| Acronym | Definition |
|---|
| PWO | Pre-Workout |
| PWO | Prince of Wales's Own (Regiment of Yorkshire) |
| PWO | Perfect Working Order (classifieds) |
| PWO | Preferred Walk-On (college sports) |
| PWO | Public Severe Weather Outlook (US NOAA) |
| PWO | Public Works Officer (US Navy) |
| PWO | Philatelic Webmasters Organization |
| PWO | Post Work Out (after exercise) |
| PWO | Payment With Order (advance payment) |
| PWO | Pweto, Zaire (airport code) |
| PWO | Principle Warfare Officer (Royal Navy) |
| PWO | Public Welfare Offense |
| PWO | Professional Wastewater Operators |
| PWO | Pichu's World Oekaki (gaming) |
| PWO | Pokemon World Online |
| PWO | Poor Wandering One (song; Pirates of Penzance) |
| PWO | Procurement Work Order |
| PWO | Practical World Outlook |
| PWO | Pfeizer Wind Orchestra (Kent, UK) |
| PWO | Professional Warfare Operations (gaming clan) |
| PWO | Peter's World Order |
| PWO | Physician Written Opinion |
| PWO | Plumb Wore Out |
| PWO | People's Welfare Organization (Sri Lanka) |