NPY
| Acronym | Definition |
|---|---|
| NPY | Neuropeptide Y |
| NPY | Ngaanyatjarra Pitjantjatjara Yankunytjatjara (women's council; est. 1980; Australia) |
| NPY | North Penn YMCA (Young Men's Christian Association; Pennsylvania) |
| NPY | Newspaper Photographer of the Year (National Press Photographers Association) |