| Developer | Control Data Corporation |
|---|---|
| Working state | Historic |
| Initial release | 1980s |
| Marketing target | Mainframe computers |
| Platforms | CDC Cyber 180 series and successors |
| License | Proprietary |
NOS/VE (Network Operating System / Virtual Environment) is a discontinued operating system with time-sharing capabilities, written by Control Data Corporation in the 1980s. It is a virtual memory operating system, employing the 64-bit virtual mode of the CDC Cyber 180 series computers. NOS/VE replaced the earlier NOS and NOS/BE operating systems of the 1970s.