| Abbreviation | Definition |
|---|---|
| NWRA | National Wildlife Refuge Association |
| NWRA | Nevada Water Resources Association |
| NWTF | National Wild Turkey Federation |
| NWTFI | National Wild Turkey Federation, Inc. |
| NWV | Northwest Venture |
| NYA | National Youth Agency |
| NYA | National Youth Alliance |
| NYA | Neighborhood Youth Association |
| NYA | Network for Young Artists |
| NYA | Nottingham Youth Association |
| NYAC | National Youth Advocacy Coalition |
| NYAM | New York Academy of Medicine |
| NYAS | New York Academy of Science |
| NYBI | New York Bioscape Initiative |
| NYC | National Youth Council |
| NYCHS | New York Correction History Society |
| NYCSL | National Youth Coalition of Sri Lanka |
| NYCT | New York Community Trust |
| NYD | National Youth Department |
| NYD | National Youth Development |