NYAS
| Acronym | Definition |
|---|---|
| NYAS | New York Academy of Sciences (New York City, NY, USA) |
| NYAS | National Youth Advocacy Service (England and Wales, UK) |
| NYAS | New York Airport Service (Brooklyn, NY) |
| NYAS | Neil Young Appreciation Society (est. 1981; UK) |
| NYAS | New York Audio Society (Flushing, NY) |