Title
- Sentences1
- Sermones ad heremitas1
- Sermones de tempore et de sanctis1
- Sharakan1
- Sophologium1
- Specchio di Croce1
- Speculum Christiani1
- Speculum anime1
- Speculum doctrinale1
- Speculum humanae salvationis1
- Summa confessorum1
- Summa de casibus conscientiae1
- Summa theologica1
- Supplicatio1
- Taqdīm Abī Bakr1
- Tenures1
- Tetrabiblos1
- Text on adornment1
- Text on government1
- Text on logic1