MTOS
| Acronym | Definition |
|---|---|
| MTOS | Movable Type Open Source (Gnu's Not Unix application) |
| MTOS | Multi Tape Operating System |
| MTOS | Multi Tasking Operating System |
| MTOS | Major Trauma Outcome Study (est. 1982; Committee on Trauma; American College of Surgeons) |
| MTOS | Magnetic-Tape Operating System |
| MTOS | Mountain Obscuration |
| MTOS | Metal Thick Oxide Semiconductor |
| MTOS | Mountain Trail Outdoor School (Hendersonville, NC) |