Encyclopedias, Almanacs, Transcripts, and Maps
- Mortara Case
- Mortara, Lodovico
- Mortara, Marco
- Morteira, Saul Levi
- Mortification
- Morton, Louis C.
- Morton, Robert, Bl.
- Morwitz, Edward
- Mosaddeq, Mohammad (1882–1967)
- Mosaics
- Mosbach
- Mosbacher, Emil Jr.
- Moscati, Giuseppe Mario Carolo Alphonse, St.
- Moscati, Sabatino
- Moscato, Judah ben Joseph
- Moschus, John
- Moscovitch, Maurice
- Mosenthal
- Mosenthal, Salomon Hermann
- Moser, Jacob