| Acronym | Definition |
|---|
| NPO➣Non-Profit Organization |
| NPO➣Newport (Amtrak station code; Newport, OR) |
| NPO➣Nuclear Plant Operator |
| NPO➣National Printing Office (Philippines) |
| NPO➣New Pacific Order (Cybernation alliance) |
| NPO➣North Pacific Oscillation (meteorology) |
| NPO➣New Polar Order (Cybernations Alliance) |
| NPO➣No Particular Order (band) |
| NPO➣National Program Office(r) |
| NPO➣Negative and Positive to Zero |
| NPO➣Nagoya Philharmonic Orchestra (Japan) |
| NPO➣Nederlandse Publieke Omroep (Dutch public broadcasting system) |
| NPO➣Non-Product Output |
| NPO➣Nurses Professional Organization |
| NPO➣National Productivity Organization |
| NPO➣Net Power Output (electric power) |
| NPO➣Northern Physicians Organization (Traverse City, MI) |
| NPO➣Nil Per Os (Latin: Nothing by Mouth) |
| NPO➣Naval Port Officer (US Navy) |
| NPO➣Non Productive Overtime |
| NPO➣Network Performance Objectives (ITU-T) |
| NPO➣Non Per Os (Latin: Nothing by Mouth) |
| NPO➣National Public Health Officer |
| NPO➣National Public Observatory (Radium Springs, NM) |
| NPO➣Nulla Per Os (Latin: Nothing By Mouth, also Non/Nil Per Os) |
| NPO➣Nucleus Preopticus |
| NPO➣Navy Purchasing Office |
| NPO➣New Personnel Orientation |
| NPO➣Naval Petroleum and Oil Shale Reserves |
| NPO➣Naval Project Office |
| NPO➣National Platform Operations (Sprint) |
| NPO➣Navy Program Objective |
| NPO➣NWTS Program Office (US DOE) |