Author
- Rāmakr̥ṣṇādhvarin1
- Rāmakṛṣṇa Dīkṣita1
- Rāmatarkālaṅkārabhaṭṭācārya1
- Rāmeśvara Bhaṭṭa1
- Rṣiśarman1
- Sadāśivaśāstri Sahasabudhya1
- Salomon Trismosin1
- Saʻīd ibn Hibat Allāh ibn al-Ḥusayn1
- Saṃvarta1
- Saṅkhā1
- Serapion the Younger1
- Sextus Empiricus1
- Shakalya1
- Somadaivajña (Son of Rudrabhaṭṭa)1
- Sriharsha1
- Svapneśvara1
- Svayamprakāśayati1
- Sylvester II1
- Theobaldus Episcopus1
- Thomas Aquinas1