| Acronym | Definition |
|---|
| ETCS | Electronic Toll Collection System |
| ETCS | Elementary Theory of the Category of Sets (mathematics) |
| ETCS | European Train Control System |
| ETCS | Electronic Throttle Control System |
| ETCS | Electronic Traction Control System (automobile mechanics) |
| ETCS | Engineering, Technology, and Computer Science (various universities) |
| ETCS | Enterprise Technology Corporate Services (various companies) |
| ETCS | Senior Chief Electronics Technician (Naval Rating) |
| ETCS | Expeditionary Tactical Communications System |
| ETCS | Extension Technology and Computer Services (University of Missouri-Columbia) |
| ETCS | Electrolytic Tin Coated Steel |