TCOS
| Acronym | Definition |
|---|---|
| TCOS | The Chamber of Secrets (Harry Potter) |
| TCOS | The Chronicles of Spellborn (game) |
| TCOS | Technical Committee on Operating Systems |
| TCOS | Thin Client Operating System |
| TCOS | Telesec Chipcard Operating System |
| TCOS | Tactical Combat Operations System |
| TCOS | Total Coronary Obstructive Syndrome |
| TCOS | Traction Control Override Switch |
| TCOS | The Caves of Steel (novel) |
| TCOS | Traveling Class Of Service |
| TCOS | Team Communication and Organization System |