Encyclopedias, Almanacs, Transcripts, and Maps
- College and University Residence Halls
- College Entrance Examination Board, the
- College Financial Aid
- College on Problems of Drug Dependence (CPDD), INC
- College Rankings
- College Recruitment Practices
- College Search and Selection
- College Seminars for First-Year Students
- College Student Retention
- College Students with Disabilities
- College Teaching
- Colleges and Universities with Religious Affiliations
- Colleges and Universities, Organizational Structure of
- Collier, John, Jr. (1913–1992)
- Colombia as Drug Source
- Comenius, Johann (1592–1670)
- Commissions on Drugs
- Common Ancestor
- Common Vehicle Spread
- Communication for Health