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.

The strongholds of DP were the industrial cities of Northern Italy, which had strong leftist traditions.

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.