Encyclopedias, Almanacs, Transcripts, and Maps
- Motzkin, Leo
- Mounier, Emmanuel
- Mount Athos, Monastic Republic of
- Mount Melleray Abbey
- Mount St. Mary's College and Seminary
- Mountain Jews
- Mourret, Fernand
- Movement for a Better World
- Mowinckel, Sigmund
- Mowinckel, Sigmund Olaf Plytt°
- Mowshowitz, Israel
- Moyal, Esther
- Moyë, John Martin, Bl.
- Moyenmoutier, Abbey of
- Moẓa
- Mozambique, The Catholic Church in
- Mozarabic Chant
- Mozarabic Rite
- Mozes
- Mozhao Chan (Silent Illumination Chan)