Encyclopedias, Almanacs, Transcripts, and Maps
- Reckendorf, Hermann Solomon
- Recklinghausen
- Reconciliation, Ministry of
- Reconstructionism
- Reconstructionist Rabbinical College
- Records, Phonograph
- Rector Potens, Verax Deus
- Rectors
- Recusant Literature
- Red Heifer
- Red Mass
- Redemption (in the Bible)
- Redemption (Theology of)
- Redemptor Hominis
- Redemptoris Mater
- Redemptoris Missio
- Redemptoristines
- Redemptorists
- Reder, Bernard
- Redl, Fritz