- Monasteries1
- Monasterio de San Jerónimo de Monte Olivete (Sant Pere de Ribes, Spain)1
- Monasterio de San Jerónimo de la Murtra (Badalona, Spain)1
- Monasterio de San Jerónimo del Valle de Hebrón (Barcelona, Spain)1
- Monastic and religious life of women1
- Monastic and religious life--Early church1
- Monasticism and religious orders for women1
- Moneylenders1
- Monks1
- Monothelitism1
- Montmorency family1
- Montserrat (Abbey)1
- Montúfar, Alonso de, active 1512-15701
- Mordecai (Biblical figure)1
- More, Thomas, Saint, 1478-15351
- Morelli, Lorenzo Matteo, active 1480-14811
- Moriscos1
- Morocco1
- Moses (Biblical leader)1
- Mosteiro de S. Mónica (Lisbon, Portugal)1