- Letter writing, Persian1
- Letter writing, Turkish1
- Lexicography1
- Literary style1
- Liturgical books1
- Liturgical poetry1
- Liturgies1
- Manuscripts, English1
- Manuscripts, European1
- Manuscripts, Hebrew1
- Manuscripts, Italian1
- Manuscripts, Judeo-Arabic1
- Manār al-anwār fī al-uṣūl (Nasafī, ʻAbd Allāh ibn Aḥmad)1
- Maqamah1
- Marginalia1
- Martyrs1
- Mary, Blessed Virgin, Saint, in the liturgy1
- Mashāriq al-anwār (Ṣaghānī, al-Ḥasan ibn Muḥammad)1
- Mathematics1
- Mawrid al-ẓamʼān (Kharrāz, Muḥammad ibn Muḥammad)1