Northamptonshire County Council was the county council that governed the non-metropolitan county of Northamptonshire in England. It was originally formed in 1889 by the Local Government Act 1888, recreated in 1974 by the Local Government Act 1972 and abolished in 2021. The headquarters of the council was County Hall in Northampton.

The County Hall is a municipal facility on George Row in Northampton, Northamptonshire, England, which was the headquarters of Northamptonshire County Council until it was dissolved in 2021. It is a Grade II* listed building. The building is adjacent to the former Sessions House which is now used as a Tourist Information Centre.