1920 Czechoslovak parliamentary election

Parliamentary elections were held in Czechoslovakia on 18 and 25 April 1920. Members of the Chamber of Deputies were elected on 18 April and members of the Senate on 25 April. The elections had initially been planned for mid- or late 1919, but had been postponed.

Results
281 of the 300 Chamber of Deputies seats 281 were unfilled as elections were not held in Hlučín Region (part of the Moravská Ostrava electoral district, resulting in one less deputy being elected from that district), the Těšín electoral district (nine deputies) and the Užhorod electoral district (nine deputies). 16 parties won parliamentary representation. Voter turnout was 90% for the Chamber election and 76% for the Senate.

The Czechoslovak Social Democratic Workers' Party (ČSDSD) emerged as the largest party in the 1920 election, with 26% of the vote and 74 seats in the Chamber of Deputies and 28% of the vote and 41 seats in the Senate and 41 senators elected. Amongst the Czech voters, the 1920 election outcome was marked by remarkable stability compared to the 1911 election. The gap between Czech socialist and bourgeois parties had only moved by 0.4% compared to the 1911 result.