Jozef Gašpar Tiso (Slovak pronunciation: [ˈjɔzef ˈtisɔ], Hungarian pronunciation: [ˈjoʒɛf ˈtiso]; 13 October 1887 – 18 April 1947) was a Slovak politician, dictator, and Catholic priest who served as president of the First Slovak Republic, a client state of Nazi Germany during World War II, from 1939 to 1945. After the war, in 1947, he was convicted of treason and executed in Bratislava.