Horst Janssen was a German draftsman, printmaker, poster artist and illustrator. He had a prolific output of drawings, etchings, woodcuts, lithographs and wood engravings.

Janssen was a student of Alfred Mahlau at the Landeskunstschule Hamburg. He first published in the newsweekly Die Zeit in 1947. In the early 1950s, he started working in lithography, on an initiative of Aschaffenburg paper manufacturer Guido Dessauer, using the technical facilities of a coloured paper factory. The first retrospective of Janssen's drawings and graphic works was shown in 1965, first in the kestnergesellschaft Hanover, then in other German cities and in Basel. In 1966, he was awarded Hamburg's Edwin Scharff Prize. International exhibitions foll...