Ion Diaconescu (Romanian pronunciation: [iˈon di.akoˈnesku]; 25 August 1917 – 11 October 2011) was a Romanian anti-Communist activist and politician. He was imprisoned as a political prisoner for seventeen years from 1947 to 1964 during Romania's Communist era. Diaconescu later became a leader of the Christian-Democratic National Peasants' Party (PNŢCD).
Born in Boțești, Argeș County, Diaconescu began his political in 1936, when he joined the Peasants' Party youth wing. The Communist Party took power in Romania in 1947 following World War II. Diaconescu was arrested in 1947, but survived his imprisonment at a Romanian gulag. Romanian authorities released him in 1964 after seventeen years in prison as party of an amnesty program for political prisoners.
Romanian dictator, President Nicolae Ceaușescu, and the Communist government fell in the Romanian Revolution of 1989. Diaconescu co-founded the Christian-Democratic National Peasants' Party in 1989 after the revolution.