Duka is a surname. Notable people with the surname include:
Armand Duka (born 1962), Albanian businessman Dilly Duka (born 1989), American soccer player Dominik Duka (1943–2025), Czech Catholic archbishop Theodore Duka (1825–1908), Hungarian army officer Duka de Kádár family, a Hungarian noble family of Aromanian-Serb descent
See also Djuka, given name also spelled Duka Duka, a village in Hungary