Protestant Christianity: Biographies
- Robert Browne
- Robert Schuller
- Rowan Douglas Williams
- Rowland Legh
- Rudolf Karl Bultmann
- Russell Herman Conwell
- Samson Occom
- Samuel Hopkins
- Samuel Irenaeus Prime
- Samuel Seabury
- Sebastian Franck
- Sebastien Castellio
- Selina Hastings countess of Huntingdon
- Sir George Adam Smith
- Terry Waite
- Theodore Beza
- Theodore Parker
- Thomas Chalmers
- Thomas Charles
- Thomas Erastus