NSPI
| Acronym | Definition |
|---|---|
| NSPI | National Spa and Pool Institute |
| NSPI | Name Server Provider Interface |
| NSPI | National Spa & Pool Institute |
| NSPI | Nova Scotia Power Incorporated |
| NSPI | Name Service Provider Interface (Microsoft) |
| NSPI | Nevada Student Paranormal Investigation |
| NSPI | National Society of Performance and Instruction |
| NSPI | No Significant Performance Impact |
| NSPI | Nocturnal Sciences and Paranormal Investigations (Georgia) |