Encyclopedias, Almanacs, Transcripts, and Maps
- Rap Music
- Rassenhygiene
- Rational Choice Theory
- Realism and Idealism
- Refugees, Demography of
- Reich, Wilhelm 1897–1957
- Religion, Politics, and War
- Religion, Study of
- Religions, Population Doctrines of
- Religious Affiliation
- Religious Movements
- Religious Organizations
- Religious Orientations
- Remarriage
- Renault, Mary 1905–1983
- Renewal Theory and the Stable Population Model
- Rent Boy
- Reparations for Racial Atrocities
- Replacement Children
- Reproduction (Procreation)