Fathwinter, artist name for Franz Alfred Theophil Winter (May 23, 1906 in Mainz, † June 27, 1974 in Düsseldorf), was an artist of the Informel.
From 1924 to 1927 he studied at the State School for Arts and Crafts in Mainz and in 1929/30 in evening classes at the Städelschule in Frankfurt am Main. During the National Socialist period he was banned from exhibiting. His evacuation to Murnau in 1942 led to a closer acquaintance with Gabriele Münter and an examination of the work of Wassily Kandinsky. From 1946 he was associated with the artist group Der Rote Reiter in Traunstein. From 1949 he worked under the name Fathwinter (composition of the first letters of the first name). From 1955 he lived and worked in Düsseldorf. Fathwinter was a member of the Deutscher Künstlerbund, in whose exhibitions he took part from 1954.