Johann Emil Rudolf Herrmann, known as Hans (8 March 1858, Berlin - 21 July 1942, Berlin) was a German landscape and genre painter. He specialized in scenes of the Netherlands.
He studied at the Prussian Academy of Arts with Otto Knille, Karl Gussow and Christian Wilberg.
From 1879-1882, he took classes in landscape painting from Eugen Dücker at the Kunstakademie Düsseldorf.
Regular study trips took him to France, Italy, and Holland, where he attended the "Art Summer School" of the American-born painter, George Hitchcock.