Otto Karl Heinrich Fritz Fedder was a German landscape painter.

Fedder came to Munich in 1895. Studied painting at the Munich Art Academy under Wilhelm von Diez and Eduard Grützner. He painted almost exclusively romantic landscapes, mostly at sunset or moonlight, always in landscape format.

In 2019, Bavaria restituted to the heirs of Julius et Simone Davidsohn the painting by Fedder entitled Diligence dans les montagnes (Bayerische Staatsgemäldesammlungen Inv.-Nr. 12214). The Gestapo had confiscated it from the Davidsohns in 1938.