Karel Prager (August 24, 1923 in Kroměříž – May 31 2001 in Prague) was a Czech architect. He was one of the most prominent architects of modernist and brutalist architecture in the Czechoslovakia during the second half of 20th century. His works include Federal Assembly, National Theatre new building and Komerční banka buildings in Prague. * National Theatre, Prague * Federal Assembly, Prague * Komerční banka building, Prague * Research building at Petřiny, Prague