| Acronym | Definition |
|---|
| NPSL➣Nonprofits in Second Life (virtual community) |
| NPSL➣National Professional Soccer League (USA) |
| NPSL➣National Physical and Standards Laboratory (Pakistan) |
| NPSL➣National Philharmonic Society of Lithuania (est. 1940) |
| NPSL➣Navy Primary Standards Laboratory |
| NPSL➣Numeric Power Systems, Ltd. (India) |
| NPSL➣Non-Point Source Load (water pollution) |