| Abbreviation | Definition |
|---|---|
| NBVA | New Bedford Volleyball Association |
| NBW | Nothing But Wrestling |
| NC | Non Competitive |
| NC | Nordic Combined |
| NC | Not Compete |
| NCA | National Cheerleading Association |
| NCA | Non Cheerleaders Association |
| NCAA | Never Convicted Arrested Athletes |
| NCAAB | National Collegiate Athletic Association Basketball |
| NCAAF | National Collegiate Athletic Association Football |
| NCAAM | National Collegiate Athletic Association - Men |
| NCAAW | National Collegiate Athletic Association - Women |
| NCAC | North Carolina Aquatic Club |
| NCBL | National Capital Baseball League |
| NCBL | Northeastern Conference Senior Basketball League |
| NCC | Natchitoches Country Club |
| NCC | Nondescripts Cricket Club |
| NCCAA | National Christian College Athletic Association |
| NCDA | Northern California Darts Association |
| NCDA | Northern Colorado Darts Association |