- Missals1
- Missals (Service books)1
- Missions1
- Monarchy1
- Monardes, Nicolás, approximately 1512-15881
- 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 of women--Middle Ages1
- Monasticism and religious orders--Rules1
- Moneylenders1
- Montmorency family1
- Montúfar, Alonso de, active 1512-15701
- Morales family1
- Morales, Andrés de, active 1683-16851
- Morales, Francisco de, active 1683-16851
- Morales, Nicolás de, active 1683-16851
- Morelli, Lorenzo Matteo, active 1480-14811
- Morocco1