Lincoln (/ˈlɪŋkən/) is a cathedral city and the county town of Lincolnshire, within the East Midlands of England. The non-metropolitan district of Lincoln has a 2012 population of 94,600. The 2011 census gave the entire urban area of Lincoln (which includes North Hykeham and Waddington) a population of 130,200.

Lincoln developed from the Roman town of Lindum Colonia, which developed from an Iron Age settlement. Lincoln's major landmarks are Lincoln Cathedral, a famous example of English Gothic architecture, and Lincoln Castle, an 11th-century Norman castle. The city is also home to the University of Lincoln and Bishop Grosseteste University. See Lincoln City F.C. for Lincoln City Football Club. Lincoln is situated in a gap in the Lincoln Cliff 141 miles (227 kilometres) north of London, at an elevation of 67 feet (20.4 metres) above sea level by the River Witham, stretching up to 246 feet (75.0 metres) above sea level in the uphill area around the cathedral.