- Cancer
- Cardiovascular diseases
- Causes of death & Life expectancy
- CEIR – Centre for Epidemic Interventions Research
- Centre for Disease Burden
- Centre for Fertility and Health
- Centre for Informed Health Choices
- Child Growth Study of Norway
- Childhood and health promotion measures
- Childhood Immunisation Programme
- Cohort of Norway (CONOR)
- Corona Child Study
- Corona Household Study
- Coronavirus - facts, advice and measures
- Coronavirus disease - advice and information
- Coronavirus immunisation programme
- Cosmetic allergy
- COVID-19 Certificate
- CO-CREATE