Londonderry County Borough Council election, 1920

An election to Londonderry County Borough Council took place in January 1920 as part of that year's Irish local elections. The Local Government (Ireland) Act 1919 had seen elections for local government in Ireland change to a more proportional system. 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.

Nationalist control of the council wouldn't last however, and following the partition of Ireland the Northern Irish Government restored the older, and less representative ward based system.