| Abbreviation | Definition |
|---|---|
| NICA | National Interscholastic Cycling Associate |
| NICA | National Interscholastic Cycling Association |
| NJS | Nihon Jitensha ShinkMkai (Japan Bicycle Promotion Association) |
| NJS | Nihon Jitensha Shinkokai (Japan Bicycle Promotion Association) |
| NMBA | Nittany Mountain Biking Association |
| NOS | Not On Sportbikes |
| NRBC | National Road Bicycle Club |
| NSCR | National Studio Cycling Register |
| NSR | Northwest Sportbike Riders |
| NTBR | North Texas Bicycle Rally |
| NTN | Noquemanon Trail Network |
| NUMB | Nebraska United Methodist Bike |
| NUMB | Northeastern Utah Mountain Biking |
| NWCC | North West Cycling Club |
| OBCA | Oregon Bicycle Constructors Association |
| OBF | Ohio Bicycle Federation |
| OBR | Oregon Bicycle Ride |
| OCA | Ontario Cycling Association |
| OEF | Oklahoma Earthbike Fanatics |
| OFN | Ottawa Freecycle Network |