| Acronym | Definition |
|---|
| NFN | Naturisten Federatie Nederland (Dutch: Netherlands Naturist Federation) |
| NFN | Native Forest Network |
| NFN | Normal for Norfolk |
| NFN | National Federation of Nurses |
| NFN | Naples Free-Net (Naples, FL) |
| NFN | Naval Fires Network |
| NFN | Not for Noobs |
| NFN | Nederlandse Federatie van Naturistenverenigingen |
| NFN | Not for Nothing |
| NFN | Nintendo Fan Network |
| NFN | No First Name (forms completion) |
| NFN | Neural Foraminal Narrowing |
| NFN | NGO Federation of Nepal |
| NFN | Norsk Nettverk for Næringseiendom (Norwegian: Norwegian Network for Commercial Property; est. 1992) |
| NFN | Nepal Federation of Nationalities |
| NFN | National Fiber Network, Inc. |