| Abbreviation | Definition |
|---|---|
| NPFC | Noble Park Football Club |
| NPFL | Nigeria Premier Football League |
| NPFL | Nigeria Professional Football League |
| NPFL | Nigerian Professional Football League |
| NPFL | North Pilbara Football League |
| NRFC | Newport Rugby Football Club |
| NRFC | Northern Rangers Football Club |
| NRFC | Northolt Rugby Football Club |
| NRFU | Northland Rugby Football Union |
| NRMFA | Niagara Regional Minor Football Association |
| NSFA | Northern Suburbs Football Association |
| NSFC | Northern Saints Football Club |
| NSFL | Nassau Suffolk Football League |
| NTFA | National Tackle Football Association |
| NTFA | Northern Tasmanian Football Association |
| NTFC | Northampton Town Football Club |
| NTFL | North Texas Football League |
| NTFL | Northern Tasmanian Football League |
| NTFL | Northern Territory Football League |
| NUFC | Newcastle United Football Club |