The Democratic Left Alliance was a social-democratic political party in Poland. It was formed on 9 July 1991 as an electoral alliance of centre-left parties, and became a single party on 15 April 1999. It was the major coalition party in Poland between 1993 and 1997, and between 2001 and 2005, with four Prime ministers coming from the party: Józef Oleksy, Włodzimierz Cimoszewicz, Leszek Miller and Marek Belka. It then faded into opposition, overshadowed by the rise of Civic Platform and Law and Justice.

Józef Oleksy was a Polish left-wing politician who served as Prime Minister of Poland from 7 March 1995 to 7 February 1996, when he resigned due to espionage allegations. He was chairman of the Democratic Left Alliance.