Farkas Molnar (June 21, 1897 - January 12, 1945) was a hungarian architect. He became a leading member of the Modern Movement between the wars. A powerful protagonist of International Modernism, Molnar designed several white-rendered blocky houses, with bold cantilevers and deep terraces, set in the hills around Budapest, clearly influenced by De Stijl.

He studied at the Technical University and the Art School in Budapest, then at Bauhaus in Weimar as a student of Walter Gropius.

At the Bauhaus he designed his Red Cube House (1922) which was to be published, and is associated with Hungarian Activism. In 1929, at the invitation of Gropius, he contributed to the CIAM conference on 'The Small Apartment', after which he and others formed the Hungarian branch of CIAM. He built mostly villas. His works are outstanding buildings of constructivist and functionalist architecture in Hungary. Some of his designs are paradigms of the International Style that gelled at the Weissenhofsiedlung, Stuttgart, in 1927. For a brief period in 1933 he collaborated with Marcel Breuer before the latter emigrated to America.

Molnar had opportunities to go abroad, already in his twenties, but he decided to come back to Hungary and finish his studies. Even in his forties Gropius encouraged him to move to America where Breuer became a well-known U.S. architect. While remaining loyal to his roots, he lived in Hungary and died young in his house in a bomb attack during the Soviet siege of Budapest.

"He was the master of his vocation. He died too early to exploit his talent" - commented Gropius on his oeuvre.