| Acronym | Definition |
|---|
| NPTI➣National Power Training Institute (Ministry of Power, India) |
| NPTI➣National Personal Training Institute (Corona Del Mar, California) |
| NPTI➣Northeastern Pennsylvania Technology Institute (est. 2003) |
| NPTI➣New Plus Type Indicator (financial psychological indicator) |
| NPTI➣New Professions Technical Institute |
| NPTI➣National Piano Teachers Institute (Dallas, TX) |
| NPTI➣NonProfit Training Institute |