Keynsham is a town and civil parish located in the Bath and North East Somerset district of Somerset, England. Situated on the A4 road connecting the cities of Bristol and Bath, it lies near the south-eastern outskirts of Bristol.
According to the 2021 census, the parish had a population of 19,596, with a built-up area population of 19,255. The town was recorded in the Domesday Book as Cainesham, a name believed to signify the home of Saint Keyne.