Hermann Eduardovich Johansen (Герман Эдуардович Иоганзен) (1866–1930) was a biologist and ornithologist from the Russian Empire.
He moved to Tomsk in 1893 and began teaching German, physics and natural history in the Alekseyev school.
Hermann Johansen undertook basic faunistic investigations of large areas of Siberia and was particularly an expert of bird biology.
An appreciable part of his bird collections are kept at the Zoological Museum of the University of Copenhagen.
[1] They were brought there by his successor in the professor chair, Hans Johansen, when the latter was expelled from the Soviet Union by Stalin in 1937.