C3S
| 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) |