CST
- CST complex
- California Standards Test
- Cambridge Systems Technology
- Canada Social Transfer
- Canadian Society of Transplantation
- Cannon Street station
- Captopril suppression test
- Cargo Sous Terrain
- Catholic social teaching
- Cavernous sinus thrombosis
- Cell Signaling Technology
- Center for Survivors of Torture
- Centistokes
- Central Standard Time
- Certification for Sustainable Transportation
- Certified sex therapist
- Cheng Shin Tire
- Chhatrapati Shivaji Terminus
- Chicago Shakespeare Theater
- Child sex tourism
- China Standard Time
- Church of Spiritual Technology
- Civil Support Team
- Claremont School of Theology
- Coast Air
- Collective Security Treaty
- Community Security Trust
- Computer Simulation Technology
- Concept of Stratification
- Concrete syntax tree
- Congregation of Saint Thérèse of Lisieux
- Constable
- Constant strain triangle element
- Contraction stress test
- Council for Science and Technology
- Cox Sports Television
- Craniosacral therapy
- Crew Space Transportation 100
- Cross-species transmission
- Cystatin
- Czech Television
- Eastern Time Zone
- Multiple Spanning Tree Protocol
- Sandinista Workers' Centre
- Socialist Workers' Current
- Stockholm Central Station