Justus Perthes Publishers (German: Justus Perthes Verlag) was established in 1785 in Gotha, Germany. Justus Perthes was primarily a publisher of geographic atlases and wall maps. He published Petermanns Geographische Mitteilungen and also the Almanach de Gotha (Gothaischer Hofkalender). In 2016 the publisher was discontinued.