| Acronym | Definition |
|---|
| NCOS➣National Commission on Space (US NASA) |
| NCOS➣Non Concurrent Operating System |
| NCOS➣Network Client Operating System |
| NCOS➣Network Computer Operating System |
| NCOS➣Network Class Of Service (Northern Telecom) |
| NCOS➣National Centre for Development Cooperation |
| NCOS➣National Chief of Staff |
| NCOS➣National Capitol Orchid Society |
| NCOS➣Non Commissioned Officer's School |
| NCOS➣National Council on Stuttering |
| NCOS➣North Carolina Optometric Society |
| NCOS➣Numbered Class Of Service |