NSFL
| 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 |