Philipp Clüver (1580 – 31 December 1622) was an Early Modern
German geographer and historian.
Clüver was also a prolific writer on mathematical and
theological subjects. He is remembered by collectors and historians
of cartography for his edition of Ptolemy's Geographia (based on
Mercator's edition of 1578) and for miniature atlases that were
reprinted for most of the 17th century. Many of his maps were
etched for him by Petrus Bertius.