Kálmán Molnár was a Hungarian graphic designer, poster artist and university professor known for film, theatre, cultural and socio-political posters. His work combined graphic experimentation with clear visual communication, and he became an important figure in Hungarian design graphics.

Molnár was born in Budapest on April 10, 1943. He studied at the Vocational and Applied Arts Secondary School from 1957 to 1961 and then at the Hungarian University of Fine Arts from 1963 to 1967, first studying painting under Géza Fónyi and then graphic design under György Konecsni. He began exhibiting in 1966 and established himself as an independent graphic artist in 1967.

From the late 1960s, Molnár produced posters for films and theatre, including The Gentle Bikers, The Trap, Flowers for Algernon, Confessions of a Police Inspector, Birds of Prey, The Wall, The House of Bernarda Alba, The Emperor Jones and Petrushka. He also created socio-political posters and exhibition designs for Hungarian cultural events abroad. His work was exhibited in Hungary, Poland, Germany, Britain, France, Finland, Croatia and elsewhere, and appeared in international graphic design publications including Graphis, Modern Publicity and Japan Graphic Design.

Molnár was also active in professional and academic institutions. From 1989 he was a member of the Association of Hungarian Visual and Industrial Artists and headed its Design Graphics Department until 2014, organising national design graphics biennials and competitions. He began teaching at the Hungarian University of Fine Arts in 1990 and headed its Graphic Design Department from 1992 to 2008. He became a university professor in 1991 and served as vice-chancellor from 1992 to 2004. He received numerous awards, including the Grand Prize of the Design Graphic Biennale in 1984 and 1988 and the Munkácsy Award in 1990.

His works are held in the Hungarian National Gallery, the National Széchényi Library, the Transport Museum, the Munkácsy Mihály Museum and the MAHÍR Poster Archive. He died on June 21, 2017, in Budapest, aged 74.