The City of Doncaster is a metropolitan borough with city status in South Yorkshire, England. It is named after its principal settlement, Doncaster, and includes the surrounding suburbs of Doncaster as well as numerous towns and villages. The district has large amounts of countryside; at 219 square miles (570 km2), it is the largest metropolitan borough in England by area.

City status in the United Kingdom is granted by the monarch of the United Kingdom to specific centres of population, which might or might not meet the generally accepted definition of cities. As of 22 November 2022, there are 76 cities in the United Kingdom—55 in England, seven in Wales, eight in Scotland, and six in Northern Ireland. Although it carries no special rights, the status of city can be a marker of prestige and confer local pride.