| Acronym | Definition |
|---|
| PNO➣Piano (music) |
| PNO➣Provider Network Operations (medical care) |
| PNO➣Principal Nursing Officer |
| PNO➣Public Network Operators |
| PNO➣Parent's Night Out |
| PNO➣Pneumothorax (pulmonology) |
| PNO➣Project Number (assigned by activity) |
| PNO➣Public Network Operator |
| PNO➣Program Number |
| PNO➣Pecunia Non Olet (Latin: money does not smell) |
| PNO➣Port of New Orleans |
| PNO➣Pa-O National Organization (Myanmar) |
| PNO➣Precipitation Amount Not Available (METAR code) |
| PNO➣Premerger Notification Office (US FTC) |
| PNO➣Pagan's Night Out (est. 1992) |
| PNO➣Pair Natural Orbital |
| PNO➣Petri Nets with Objects |
| PNO➣Pseudo-Natural Orbital |
| PNO➣Planned Nonoperation (vehicle status) |
| PNO➣Plasma-Nitrided Oxide |
| PNO➣Prenegotiation Objective (contracting) |
| PNO➣Property Notarization Order (real estate) |