Grantham (ˈɡrænθəm) is a market and industrial town in the South Kesteven district of Lincolnshire, England, situated on the banks of the River Witham and bounded to the west by the A1 road. It lies some south of Lincoln and east of Nottingham. The population in 2016 was put at 44,580. The town is the largest settlement and the administrative centre of South Kesteven District.
Grantham was the birthplace of the UK Prime Minister Margaret Thatcher. Isaac Newton was educated at the King's School. The town was the workplace of the UK's first warranted female police officer, Edith Smith in 1914. The UK's first running diesel engine was made there in 1892 and the first tractor in 1896. Thomas Paine worked there as an excise officer in the 1760s. The villages of Manthorpe, Great Gonerby, Barrowby, Londonthorpe and Harlaxton form outlying suburbs of the town.
Grantham's name is first attested in the Domesday Book (1086); its origin is not known with certainty. The endin