Zdeněk Fierlinger was a Czechoslovak diplomat and politician. He served as the prime minister of Czechoslovakia from 1944 to 1946, first in the London-based Czechoslovak government-in-exile and then in liberated Czechoslovakia. Long close to the Soviet Union, he has his name often associated with the merger of his Czech Social Democratic Party with the Czechoslovak Communist Party after the communist coup in 1948.

Social Democracy, known as the Czech Social Democratic Party until 10 June 2023, is a social-democratic political party in the Czech Republic. Sitting on the centre-left of the political spectrum and holding pro-European views, it is a member of the Party of European Socialists, the Socialist International, and the Progressive Alliance. Masaryk Democratic Academy is the party-affiliated's think tank.