NAOP
| Acronym | Definition |
|---|---|
| NAOP | National Association for Olmsted Parks (Washington, DC) |
| NAOP | National Academy of Psychology (India) |
| NAOP | North American Open Pairs (bridge championship) |
| NAOP | Nuclear Asset Optimization Plan |
| NAOP | Noisy Act of Protest (band) |
| NAOP | National Alliance for Optional Parenthood (previously National Organization for Non-parents) |