Franciszek Kotus-Jankowski (Polish: [franˈt͡ɕi.ʂɛk ˈkɔ.tus jaŋˈkɔf.ski]; 28 January 1891 – 19 January 1958) was a Polish politician and communist activist. From 1945 to 1946, he was the mayor of Gdańsk, Poland, as a member of the Polish Workers' Party. He was also a Marxist revolutionary activist, being a member of the Social Democracy of the Kingdom of Poland and Lithuania, and a participant of the October Revolution in 1917 in the Russian Empire