Social Democracy of the Republic of Poland (, SdRP) was a social-democratic political party in Poland created in 1990, shortly after the Revolutions of 1989. The party was the main party of the successor parties to the Polish United Workers' Party (PZPR).
Among the creators and leading figures of SdRP were the former Polish president Aleksander Kwaà Âniewski, former speaker of the Sejm Józef Oleksy and former Prime Minister Leszek Miller. The SdRP's name was a paraphrase of the late 19th century Social Democracy of the Kingdom of Poland and Lithuania (SdKPiL), a party which was the direct predecessor of the Communist Party of Poland.
On 15 April 1999, the SdRP was folded into the Democratic Left Alliance.