- Cleveland, Ohio Case Study
- Clint Moore
- Clóvis C. Gonzaga
- Coca-Cola Enterprises
- Col William K. Klimack
- Cole Harris
- Colin Eden
- Colin Fisher
- Colin P. Gillen
- Columbia University Student Chapter
- Comer Jennings
- Concha Bielza
- Concordia University Student Chapter
- Concordia University Student Chapter
- Cong Feng and K. Sivakumar
- Cong Shi
- Conleigh Byers
- Conor McGowan
- Conrad Ruppert
- Conrado Borraz-Sanchez
