| Abbreviation | Definition |
|---|---|
| NTBA | North Texas Beard Alliance |
| NTC | Nike Training Club |
| NTCA | Norwich Terrier Club of America |
| NTCC | New Town Cricket Club |
| NTFC | Nanaimo Track and Field Club |
| NTFC | Northampton Town Football Club |
| NTLB | North Texas Light Brigade |
| NTMC | North Texas Mustang Club |
| NTOC | Nissan Turbo Owners Club |
| NTOC | North Texas Olds Club |
| NTOC | North Texas Oldsmobile Club |
| NTOC | Northern Tablelands Orienteering Club |
| NTSC | New Trier Swim Club |
| NTSC | North Toronto Ski Club |
| NTSC | North Toronto Soccer Club |
| NTSC | Northern Triad Soccer Club |
| NTTC | Nashville Table Tennis Club |
| NTUC | Ninja Turtle Underwear Club |
| NTYC | Narragansett Terrace Yacht Club |
| NTYC | Nhon Trach Yacht Club |