Philipp Jakob Cretzschmar (11 June 1786 – 4 May 1845) was a German physician and natural scientist. Cretzschmar was born at Sulzbach and studied medicine at the University of Würzburg. He taught anatomy and zoology at the Senckenberg Medical Institute of Frankfurt. The "Cretzschmar-Medaille" is an award offered by the Senckenberg foundation for outstanding work in natural sciences.