Ivan Ribar (Serbo-Croatian Cyrillic: Иван Рибар, pronounced [ǐvan rîbaːr]; 21 January 1881 – 2 February 1968[1]) was a Croatian politician who served in several governments of various forms in Yugoslavia.

Ideologically a Yugoslavist and communist, he was a prominent member of the Yugoslav Partisans, the resistance movement to the Nazi occupation of Yugoslavia.

[2] Ribar lost his entire family during World War II: his two sons, Ivo "Lola" and Jurica, and his wife Antonija.

Both Ivo and Jurica were killed in action in 1943 fighting for the Partisans, while Ribar's wife was executed by the Germans in 1944.

[4] In politics, he was: President of the Parliamentary Assembly of Kingdom of Serbs, Croats and Slovenes (1920–22)[2] President of Executive Committee, Anti-Fascist Council for the National Liberation of Yugoslavia (26 October 1942 – 4 December 1943), Chairman of the Presidium of the Provisional People's Assembly (4 December 1943 – 5 March 1945), Chairman of the Presidium of the National Assembly (29 December 1945 – 14 January 1953) From the proclamation of a republic in 1945 until 1953, Ribar was the de jure head of state of Yugoslavia; his position as parliamentary speaker was constitutionally made equivalent to that of president.