Keelby is a village and civil parish in the West Lindsey district of Lincolnshire, England, on the A18, west from the seaport of Grimsby and east from the local Humberside Airport, with close access to the A180 to the north, and M180 to the west.
In the 2001 census it had a population of 2,172, comprising 48.6% males, and 51.4% females.
Keelby is listed in the Domesday Book as "Chelebi" or "Chilebi".
Keelby has a tennis court, bowling green, park, primary school, guest house and a war memorial, a Mace and a Spar store, and two public houses, the King's Head and the Nag's Head. Religious sites are the Church of England St Bartholomew's Church and a Methodist chapel.
There is a football club with adult and junior teams. The village cricket club, reformed in 1975 after a 10 year break, plays in the Lincolnshire League, the Grimsby Midweek League and the East Lindsey Sunday League. Matches were played on the village green until 2009 before moving to a new multi-purpose sports complex on the edge of the village in 2010.
Keelby is within the catchment area of three secondary schools, Healing, Caistor Yarborough, and Caistor Grammar School.