The Hungarian Revolution of 1956 or the Hungarian Uprising of 1956 was a nationwide revolt against the communist government of the Hungarian People's Republic and its Soviet-imposed policies, lasting from 23 October until 10 November 1956. Though leaderless when it first began, it was the first major threat to Soviet control since the USSR's forces drove Nazi Germany from its territory at the end of World War II.

The revolt began as a student demonstration, which attracted thousands as they marched through central Budapest to the Parliament building, calling out on the streets using a van with loudspeakers. A student delegation, entering the radio building to try to broadcast the students' demands, was detained. When the delegation's release was demanded by the demonstrators outside, they were fired upon by the State Security Police (ÁVH) from within the building. One student died and was wrapped in a flag and held above the crowd. This was the start of the revolution.

The revolt spread quickly across Hungary and the government collapsed. Thousands organised into militias, battling the ÁVH and Soviet troops. Pro-Soviet communists and ÁVH members were often executed or imprisoned and former political prisoners were released and armed. A new government formally disbanded the ÁVH, declared its intention to withdraw from the Warsaw Pact, and pledged to re-establish free elections. By the end of October, fighting had almost stopped and a sense of normality began to return.

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