Encyclopedias, Almanacs, Transcripts, and Maps
- Religious Communities
- Religious Communities: Christian Religious Orders
- Religious Communities: Religion, Community, and Society
- Religious Diversity
- Religious Education
- Remediation
- Remipedia (Remipedes)
- Ren and Yi
- Renaissance architecture
- Renaissance art
- Renaissance music
- Renew America
- Renewable Energy
- Renewable Energy
- Renewable Natural Resources Foundation
- Rennyo
- Renou, Louis
- Reproduction, Development, and Life History
- Reproduction, Development, and Life History
- Reproductive Processes