| Acronym | Definition |
|---|
| C3S➣Command Control and Communications Segment |
| C3S➣Center for Computer and Communication Security |
| C3S➣Command Control Communications Segment |
| C3S➣Consultation, Command and Control Systems |
| C3S➣Command, Control & Communications System |
| C3S➣Command, Control, Communications & Surveillance |
| C3S➣Cysteine-3-to-Serine (biochemistry) |