An election to Londonderry Borough Council took place on Thursday 15 January 1920 as part of that year's Irish local elections. As a result, Unionists lost control over Londonderry borough council, which for the first time passed into the control of the city's Catholic majority. The various Nationalist parties in the city contested the election on a pan-nationalist front, emphasizing the national question of Irish self-government, as well as issues over housing.