Encyclopedias, Almanacs, Transcripts, and Maps
- Cross Infection
 - Cross-Cultural Communication, Competence
 - Cubberley, Ellwood (1868–1941)
 - Cults and Drug Use
 - Cultural Appropriateness
 - Cultural Diversity
 - Cultural Factors
 - Cultural Identity
 - Cultural Norms
 - Culture, Origins of
 - Curriculum, Higher Education
 - Curriculum, International
 - Curriculum, School
 - Curti, Merle (1897–1996)
 - Cyclical Universe
 - Cytomegalovirus Disease
 - Dalton School
 - Darwinism, Neo
 - Data Sources and Collection Methods
 - De Lima, Agnes (1887–1974)
 
