Sammarinese Communist Party

Communist Party of San Marino Partito Comunista Sammarinese
Founded	21 January 1921
Dissolved	1990
Succeeded by	Sammarinese Democratic Progressive Party
Ideology	Communism
Italian counterpart	Communist Party of Italy (until 1926) Italian Communist Party (after 1943)
Party flag
Politics of San Marino Political parties Elections

The Sammarinese Communist Party (Italian: Partito Comunista Sammarinese, abbreviated PCS) was a Marxist political party in the small European republic of San Marino. It was founded in 1921 as a section of the Communist Party of Italy (PCI). The organization existed for its first two decades as an underground political organization.

Between 1945 and the spring of 1957 the PCS governed the country in coalition with the Sammarinese Socialist Party (PSS). The communist-socialist coalition lost power in the events known as Fatti di Rovereta.

The PCS returned to membership in a governing parliamentary coalition in 1978, with its adherents remaining as part of the leadership group until 1992. In 1991, with the fall of the Soviet Union, the PCS formally renounced communism and relaunched itself Sammarinese Democratic Progressive Party (PPDS).