| Abbreviation | Definition |
|---|---|
| NIHF | Norwegian Ice Hockey Federation |
| NIHL | National Ice Hockey League |
| NIHL | Northern Illinois Hockey League |
| NIHL | Northern International Hockey League |
| NJD | New Jersey Devils Hockey Team |
| NJN | NEW JERSEY NETS Hockey Team |
| NMHA | Nanaimo Minor Hockey Association |
| NMHA | Nepean Minor Hockey Association |
| NMHA | Newmarket Minor Hockey Association |
| NOHA | Northern Ontario Hockey Associat |
| NOHA | Northern Ontario Hockey Association |
| NSH | National Showcase Hockey |
| NSHA | National Street Hockey Association |
| NSWIHA | New South Wales Ice Hockey Association |
| NSWIHF | New South Wales Ice Hockey Federation |
| NTGH | New Trier Girls Hockey |
| NTR | National Training Rinks |
| NWG | North West Hobart Graduates Hockey Club |
| NWHL | National Women's Hockey League |
| NWHL | North West Hockey League |