The 2016 Berlin state election was held on 18 September 2016 to elect the members to the 18th Abgeordnetenhaus of Berlin. The incumbent grand coalition of the Social Democratic Party (SPD) and Christian Democratic Union (CDU) was defeated, with both parties suffering significant losses. The Left became the third largest party, while the fourth-placed Greens suffered losses. Alternative for Germany (AfD) won seats for the first time. The Free Democratic Party (FDP) re-entered the Abgeordnetenhaus after falling out in the 2011 election. The Pirate Party, which had achieved state-level representation for the first time in the previous election, lost all of its seats.

The Left, commonly referred to as the Left Party, is a democratic socialist political party in Germany. The party was founded in 2007 as the result of the merger of the Party of Democratic Socialism (PDS) and Labour and Social Justice – The Electoral Alternative. Through the PDS, the party is the direct descendant of the Marxist–Leninist ruling party of former East Germany, that being the Socialist Unity Party of Germany (SED). Since 2022, The Left's co-chairpersons have been Janine Wissler and Martin Schirdewan. The party holds 28 seats out of 736 in the Bundestag, the federal legislature of Germany, having won 4.9% of votes cast in the 2021 German federal election. Its parliamentary group is the second-smallest of seven in the Bundestag, and is headed by parliamentary co-leaders Heidi Reichinnek and Sören Pellmann.