The Northamptonshire Police (colloquially known as Northants Police) is a territorial police force responsible for policing the county of Northamptonshire in the East Midlands of England, in the United Kingdom.
Northamptonshire Police can trace its earliest roots to 1840 when the Northamptonshire Constabulary and Daventry Constabulary were formed.
The Northamptonshire Constabulary merged with the borough police forces within Northamptonshire on 1 April 1966 to form Northampton and County Constabulary
The Force was renamed the Northamptonshire Police on 1 January 1975.