| Abbreviation | Definition |
|---|---|
| NASPE | North American Society Of Pacing And Electrophysiology |
| NASR | National Association of Shooting Ranges |
| NASRA | North American Scooter Racing Association |
| NASSA | National Association of Shooting Sports Athletes |
| NASSA | North American Stone Skipping Association |
| NASSM | North American Society For Sports Management |
| NATA | National Athletic Trainers Association |
| NATD | National Association of Tournament Directors |
| NATO | Not Another Time Out? |
| NATP | National Athletic Testing Program |
| NATS | National Aquatic Training Society |
| NATS | National Athletic Testing System |
| NATS | North American Trials Series |
| NATS | Washington Nationals (Baseball Team) |
| NATSS | National Association of Target Shooting Sports |
| NATT | North American Table Tennis |
| NAUA | Nassau Approved Umpires Association |
| NAVU | Nederlands Antiliaans Voetbal Unie |
| NAW | New Attitude Wrestling |
| NAW | North American Wrestling Foundation |