| Acronym | Definition |
|---|
| NSPP➣Ne Se Prononcent Pas (French: No Opinion; questionnaire response) |
| NSPP➣National School of Public Policy (Pakistan) |
| NSPP➣Nerdy Seattle Poly Posse (Seattle, WA) |
| NSPP➣National Survey of Psychiatric Practice |
| NSPP➣Nuclear Safety Pilot Plant |
| NSPP➣Network Space & Property Planning |
| NSPP➣National Strategic Planning Process (HIV and AIDS prevention; various locations) |
| NSPP➣New Source Permit Program (Environmental Protection Agency) |