- Chernobyl
- Chewing and Smokeless Tobacco, Snuff
- Chi-Square Test
- Chicken Pox and Shingles
- Child Care, Daycare
- Child Health Services
- Child Mortality
- Child Welfare
- Child-Resistant Packaging
- Childhood Injury
- Children's Environmental Health Initiative
- Chinese Traditional Medicine
- Chlamydia
- Chlorination
- Chlorofluorocarbons
- Cholera
- Cholesterol Test
- Chronic Illness
- Chronic Respiratory Diseases
- Cirrhosis
- Citizens Advisory Boards
- Civil Rights Act of 1964
- Classification of Disease
- Clean Air Act
- Clean Indoor Air Ordinances
- Clean Water Act
- Clerical Work
- Climate Change and Human Health
- Clinical Breast Examination
- Clinical Laboratories Improvement Act
