Johann Jakob Pfeiffer was a German evangelical theologian, as well as a professor, and later, dean, at the University of Marburg.

The Philipps University of Marburg is a public research university located in Marburg, Germany. It was founded in 1527 by Philip I, Landgrave of Hesse, which makes it one of Germany's oldest universities and the oldest still operating Protestant university in the world. It is now a public university of the state of Hesse, without religious affiliation.