| Abbreviation | Definition |
|---|---|
| NLFC | Next Level Fight Club |
| NLFC | North Launceston Football Club |
| NLFC | Northern Lights Folk Club |
| NLLC | Newport Ladies Lacrosse Club |
| NLSC | North London Sabre Club |
| NLSC | Northern Lights Sailing Club |
| NLSC | Northern Lights Sailing Club's |
| NLTC | Northern Lights Triathlon Club |
| NMBC | New Mexico Basketball Club |
| NMC | National Motor Club |
| NMC | New Members Committee |
| NMFC | New Mexico Fencing Club |
| NMFC | North Melbourne Football Club |
| NMSC | Newport Mesa Soccer Club |
| NMTC | Northern Minnesota Track Club |
| NNCR | Newcomers and Neighbors Club of Randolph |
| NNLC | New Neighbors League Club |
| NNOC | Nature Nuts Only Club |
| NNPC | Noord Nederlandsche P i Club |
| NNRC | New Norfolk Rowing Club |