Parliamentary elections were held in the Czech Republic on 8 and 9 October 2021. All 200 members of the Chamber of Deputies were elected, with the leader of the resulting government to become the Prime Minister of the Czech Republic. Following the 2017 parliamentary elections, the country had been ruled by a minority government consisting of ANO 2011 (ANO), led by prime minister Andrej Babiš, and the Czech Social Democratic Party (ČSSD), led by interior minister Jan Hamáček, with confidence and supply support from the Communist Party of Bohemia and Moravia (KSČM) until April 2021. The largest opposition party was the Civic Democratic Party (ODS), followed by the Czech Pirate Party. Other parties in the Chamber of Deputies included SPD, TOP 09, STAN, and KDU-ČSL.

The Czech Republic, also known as Czechia, is a landlocked country in Central Europe. Historically known as Bohemia, it is bordered by Austria to the south, Germany to the west, Poland to the northeast, and Slovakia to the southeast. The Czech Republic has a hilly landscape that covers an area of 78,871 square kilometers (30,452 sq mi) with a mostly temperate continental and oceanic climate. The capital and largest city is Prague; other major cities and urban areas include Brno, Ostrava, Plzeň and Liberec.