| Abbreviation | Definition |
|---|---|
| NFC | Never Fear Competition |
| NFC | Next Football Champion |
| NFCA | National Fastpitch Coaches Association |
| NFFC | Nottingham Forest Football Club |
| NFFF | North Florida Fly Fishers |
| NFK | Nynäshamns FriidrottsKlubb |
| NFL | National Football League |
| NFL | Neighborhood Football League |
| NFLC | National Football League Committee |
| NFLPA | National Football League Players Association |
| NFM | No Fear Monstertruckers |
| NFR | National Finals Rodeo |
| NG | Natural Golf |
| NG | Next Guess |
| NGG | National Gamers Guild |
| NGN | National Golf Network |
| NGSC | North Glen Sports Club |
| NGT | Next Generation Tennis |
| NGZ | Net Gaming Zone |
| NH | Nice Hand (poker) |