Proletarian Democracy (Italian: Democrazia Proletaria, DP) was a far-left political party in Italy.

The main figure of DP was the charismatic Mario Capanna, a former student leader associated with the 1968 New Left movement.

DP was opposed to the so-called 'historic compromise' between the Italian Communist Party and the Christian Democrats.

During the 1978 electoral campaign, Peppino Impastato, a leading DP member from Sicily, was murdered by the Mafia.

Two years later, the DP suffered a split, as a section led by Capanna launched their own list on ahead of the elections to the European Parliament, in association with leading Radicals, called the Rainbow Greens.