- Chunxiao Li
- Ciamac C. Moallemi
- CITGO
- CITGO
- City of New York
- City of San Francisco Police Department
- City of Stockholm, Sweden
- Claire Holloway
- Claire Kenyon
- Claremont Colleges Student Chapter
- Clarence Lee
- Clark Cheng
- Clarke Rowan
- Claudia Perlich
- Claudio Caremi
- Claudio Lucarelli
- Claudio Wolter
- Clayton J. Thomas
- Clayton Tino
- Clemson University Student Chapter
