| Abbreviation | Definition |
|---|---|
| NESS | Northeast Erotic Spanking Society |
| NEVAC | Nederlandse Vacumvereniging |
| NEVAC | Netherlands Vacuum Society |
| NFAS | National Field Archery Society |
| NFBS | Niagara Frontier Botanical Society |
| NFESC | Nurse Fellow of the European Society of Cardiology |
| NFF | Nordisk Förening för Fysiologi |
| NFF | Nordisk Frening fr Fysiologi |
| NFF | Scandinavian Physiological Society |
| NFFS | National Free Flight Society |
| NFFS | Non Ferrous Founders Society |
| NFKC | Norsk Forening for Klinisk Cytologi |
| NFKC | Norwegian Society of Clinical Cytology |
| NFKL | Norsk Forening for Kvalitet og Lederskap |
| NFKL | Norwegian Association of Quality and Leadership |
| NFMT | Norsk Forening for Musikkterapi |
| NFMT | Norwegian Music Therapy Association |
| NFRS | National Fancy Rat Society |
| NFS | Nordic Fertility Society |
| NFSD | National Fraternal Society for the Deaf |