NFOS
| Acronym | Definition |
|---|---|
| NFOS | Noosa Festival of Surfing (Australia) |
| NFOS | Near-Field Optical Spectroscopy (physics) |
| NFOS | Narodowa Fundacja Ochrony Srodowiska (Polish: National Foundation for Environmental Protection) |
| NFOS | New Forest Owl Sanctuary (UK) |
| NFOS | Niagara Frontier Orchid Society (Buffalo, NY) |
| NFOS | Network Field Operations Support |