Bournemouth Borough Council was the local authority of Bournemouth in Dorset, England and ceased to exist on 1 April 2019. It was a unitary authority, although between 1974 and 1997 it was an administrative district council with Dorset. Previously most of the borough was part of Hampshire.

Bournemouth is a coastal resort town on the south coast in the Bournemouth, Christchurch and Poole unitary authority area in the ceremonial county of Dorset, England. The town's urban subdivision had a population of 187,503 at the 2011 census making it the largest town in the county; the town is part of the South East Dorset conurbation, which has a population of 465,000.