- Maimonides, Moses, 1135-12041
- Marsi, Paolo, 1440-14841
- Melber, Johannes, 15th cent.1
- Mercator, Gerhard, 1512-15941
- Meyssens1
- Moffatt, Charles S.1
- Münster, Sebastian, 1489-15521
- Ogilby, John, 1600-1676 (cartographer)1
- Olaus, Magnus, Archbishop of Uppsala, 1490-15571
- Ortelius, Abraham, 1527-15981
- Ortelius, Abraham, 1527-1598 (Cartographer) (Geographer)1
- Ovid, 43 B.C.-17 or 18 A.D1
- Passe1
- Perotti, Niccolò, 1430-14801
- Peter Lombard1
- Peter Lombard, Bishop of Paris, ca. 1100-11601
- Peter Riga, -- ca. 1140 - 12091
- Petrus Angelus, de Monte Ulmi1
- Peurbach, Georg von, 1423-14611
- Pintz1