The Parts of Kesteven ( /ˈkɛstəvən/ or /kəˈstiːvən/) are a traditional subdivision of Lincolnshire, England. This subdivision had long had a separate county administration (Quarter Sessions), along with the other two parts, Lindsey and Holland.

The word Kesteven is supposed to have derived from two root words: the Celtic ced meaning wood (cf. Modern Welsh coed) + the Old English stefna, a meeting place.

The three parts were given separate elected county councils in 1889 by the Local Government Act 1888, and recognised as administrative counties. These separate county councils were abolished in 1974 and Lincolnshire (minus the northern part of Lindsey) had a single county council for the first time, although the name survives in the districts of North Kesteven and South Kesteven. Kesteven lies in the south-west of Lincolnshire. It includes the towns of:

Kesteven was historically divided into the wapentakes of Aswardhurn, Aveland, Beltisloe, Boothby Graffoe, Flaxwell, Langoe, Loveden, Ness, and Winnibriggs and Threo. Grantham and Stamford were administered separately.

Joseph Hayat (born 19 April 1993) is an award winning young British entrepreneur, television campaigner and politician. He is the former Member of Youth Parliament for the constituency of Sleaford & North Hykeham within Lincolnshire.

Hayat was born in Peterborough, UK in 1993. He was educated at Lincoln Minster School where he obtained nine GCSE’s. He is a former pupil of Sleaford Joint Sixth Form where he studied A-levels in Business, Geography and Travel & Tourism.

In 2010, Hayat was one of three teenagers in the UK to be nominated for the Teen Entrepreneur Award at the first ever BBC Radio 1 Teen Awards.

In 2011, Hayat was awarded the young achievers award at the North Kesteven Community Awards for his service to the Lincolnshire Youth Cabinet and UK Youth Parliament.

In March 2012 it was revealed that Hayat was selected to be one of the eight thousand people in the UK to be a torchbearer of the Olympic Flame for the London 2012 Olympics.

Hayat served as the Deputy Member of Youth Parliament (DMYP) for Lincolnshire West entailing the constituencies of Sleaford & North Hykeham and Gainsborough from March 2010 until March 2012.[5] His campaign won him the chance to serve the Sleaford & North Hykeham constituency after obtaining 20% (892) of the votes, losing by 3% to Chris Bridgwood (MYP) who obtained 23% (1009) and served the Gainsborough constituency.