NYSO
| Acronym | Definition |
|---|---|
| NYSO | New York Street Outlaws (street racing group) |
| NYSO | New York Special Olympics |
| NYSO | Northshore Youth Symphony Orchestra (Topsfield, MA) |
| NYSO | New York State-Ontario (various organization chapters) |
| NYSO | New York Stage Originals |
| NYSO | National Youth Symphony Orchestra (various locations) |
| NYSO | Nottingham Youth String Orchestra (Nottingham, England) |