Encyclopedias, Almanacs, Transcripts, and Maps
- monstera
- Montagu, Lily
- months of the year
- Montreal Protocol on Substances That Deplete the Ozone Layer (1987)
- Moody, Dwight L.
- Moore, George Foot
- moorhen
- Morality and Religion
- Moravians
- More Developed Country
- Mörike, Eduard Friedrich
- Morrison, Robert
- Mortification
- Moslem
- Mosque: Architectural Aspects
- Mosque: History and Tradition
- Moss, Stirling
- most populous countries
- Motmots (Momotidae)
- Motoori Norinaga