Title
- Shudhūr al-dhahab fī maʻrifat kalām al-ʻArab1
- Shurūṭ al-ʻibādāt1
- Siddur1
- Somnium viridarii1
- Song book1
- Song of Solomon1
- Sophologium1
- Specchio di Croce1
- Speculum Beatae Mariae Virginis1
- Speculum Christiani1
- Speculum anime1
- Speculum doctrinale1
- Speeches1
- Sphaera mundi1
- Spirto gentil magnanimo et sublime1
- Splendor paternae gloriae1
- Sportula fragmentorum1
- Statements from the Council of Basel1
- Stations of Rome1
- Sticherarion1