Konstantin Irmen-Tschet (1902–1977) was a Russian-born German cinematographer. Irmen-Tschet was a leading technician of German films from the silent era to well into the post-Second World War years. He also often worked in Switzerland.Irmen-Tschet emigrated to Germany following the Russian Revolution, and worked at first in the theatre. From 1925 he was employed as a cameraman in the large German film industry.