| Acronym | Definition |
|---|
| NSFL➣Not Safe for Life |
| NSFL➣Nova Scotia Federation of Labour (Nova Scotia, Canada) |
| NSFL➣National Swine Fever Laboratory (various locations) |
| NSFL➣Not Safe for Lunch (website links; similar to NSFW) |
| NSFL➣Nassau-Suffolk Football League (New York) |
| NSFL➣National Swiss Football League (Switzerland) |
| NSFL➣Nano Systems Fabrication Laboratory (Canada) |
| NSFL➣Northwestern Students for Life |