- Lord's Supper--Catholic Church1
- Lulav1
- Lutheran Church1
- Magic--Religious aspects--Islam1
- Manichaeism1
- Manuscripts, Cakchikel1
- Manuscripts, Greek1
- Manuscripts, Pali1
- Manuscripts, Panjabi1
- Manuscripts, Prakrit1
- Manuscripts, Purépecha1
- Manuscripts, Quiché1
- Manuscripts, Tzutuhil1
- Manār al-anwār fī al-uṣūl (Nasafī, ʻAbd Allāh ibn Aḥmad)1
- Marginalia1
- Maria Theresa, Empress of Austria, 1717-17801
- Maronite rite (Catholic Church)--Liturgy1
- Marriage--Religious aspects--Islam1
- Mary, Blessed Virgin, Saint, in the liturgy1
- Marāḥ al-arwāḥ (Ibn Masʻūd, Aḥmad ibn ʻAlī)1