Huntingdonshire ( /ˈhʌntɪŋdənʃər/ or /ˈhʌntɪŋdənʃɪər/; abbreviated Hunts) is a local government district within the administrative area of Cambridgeshire, covering the area around Huntingdon. Historically, it was one of the Administrative counties of England until 1974. It includes St Ives, Godmanchester, St Neots, and Ramsey.

The area corresponding to modern Huntingdonshire was first delimited in Saxon times, and the modern boundaries have remained largely unchanged since the 10th century.

In 1889, under the Local Government Act 1888 Huntingdonshire became an administrative county, with the new County Council taking over administrative functions from the Quarter Sessions. The area in the north of the county forming part of the municipal borough of Peterborough became instead part of the Soke of Peterborough administrative county, in Northamptonshire.

In 1965, under a recommendation of the Local Government Commission for England, it was merged with the Soke of Peterborough to form Huntingdon and Peterborough - the Lieutenancy county was also merged. Also at this time St Neots expanded westward over the river into Eaton Ford and Eaton Socon in Bedfordshire.