The Hungarian Soviet Republic or Hungarian Republic of Councils was a short-lived independent communist state established in Hungary in the aftermath of World War I.
It was the successor of the Hungarian Democratic Republic and lasted only from 21 March until 1 August 1919. The state was led by Béla Kun and was not recognized by France, the UK or the US. It was the second socialist state in the world to be formed after the October Revolution in Russia brought the Bolsheviks to power. The Hungarian Republic of Councils had military conflicts with the Kingdom of Romania, the Kingdom of Serbs, Croats and Slovenes and the evolving Czechoslovakia. It collapsed when Romanian forces occupied Budapest, after which the Kingdom of Hungary was reestablished.