| Abbreviation | Definition |
|---|---|
| NSL | Nigerian Soccer League |
| NSL | Northeast Soccer League |
| NSSA | North Suburban Soccer Association |
| NSSL | Nova Scotia Soccer League |
| NTSC | North Toronto Soccer Club |
| NUSC | Northwest United Soccer Club |
| NVSL | Northern Virginia Soccer League |
| NWSL | National Womens Soccer League |
| NWSL | National Women's Soccer League |
| NYCSL | New York City Soccer League |
| NYSL | Nashua Youth Soccer League |
| NYSL | Natomas Youth Soccer League |
| NYSL | Neighborhood Youth Soccer League |
| NYSL | Niles Youth Soccer League |
| NYSL | Norfolk Youth Soccer League |
| OAF | ASSOCIAÇÃO ACADÉMICA DE COIMBRA |
| OAFC | Oldham Athletic Football Club |
| OASL | Ohio Amateur Soccer League |
| OBSC | Oak Brook Soccer Club |
| OBSC | Ormond Beach Soccer Club |