MSX-DOS
| Developer | Microsoft Japan |
|---|---|
| OS family | DOS |
| Working state | Abandoned |
| Source model | Closed source |
| Initial release | 1984 |
| Marketing target | Home computers |
| Available in | English |
| Platforms | MSX home computer architecture |
| Kernel type | IO.SYS (Monolithic kernel) |
| Default user interface | Command-line interface (COMMAND.COM), Text user interface |
| License | Proprietary |
MSX-DOS is a discontinued disk operating system developed by Microsoft's Japan subsidiary for the 8-bit home computer standard MSX, and is a cross between MS-DOS v1.25 and CP/M-80 v2.2.