The Leninist Youth Union (Czech: Leninský svaz mladých, abbreviated LSM, Slovak: Leninský zväz mladých, abbreviated LZM), initially known as the Youth Union, was a youth organization in Czechoslovakia.[1] It was founded at a meeting held at Hotel Tichý in Prague on March 7, 1969, by district organizations of the now defunct Czechoslovak Youth Union their reaffirming adherence to Marxist-Leninist political line.[2][1][3][4] The formation of the organization followed a call from the Communist Party of Czechoslovakia to rebuild the youth movement and was engineered by Josef Jodas, his daughter Hana playing a key role in it.[5][6] The name 'Leninist Youth Union' was adopted in September 1969.[2] The organization gathered 11,402 members at its peak.[2][5] The organization had a counterpart in Slovakia, the Leninist Youth Union in Slovakia, between September 1969 and March 1970.[2][7] The Slovak Leninist Youth Union Central Committee held its last meeting on April 23, 1970.[7]
The Central Committee Leninist Youth Union held its last meeting on September 11, 1970, and decided to disband the organization by September 30, 1970.[7][5] The Socialist Youth Union was formed as a new youth organization.[5]