Parliamentary representation from Cambridgeshire

The historic county of Cambridgeshire, located in the modern-day East of England region, has been represented in Parliament since the 13th century. This article provides the list of constituencies which have formed the parliamentary representation from Cambridgeshire.

In 1889 the historic county was divided between the administrative counties of Cambridgeshire and Isle of Ely. The two administrative counties merged in 1965 to form Cambridgeshire and Isle of Ely. In 1974 Cambridgeshire and Isle of Ely was merged with Huntingdon and Peterborough to form a new expanded non-metropolitan county of Cambridgeshire. Huntingdonshire was a historic and administrative county in its own right, whereas the Soke of Peterborough had been an administrative county which was part of the historic county of Northamptonshire.

This article covers only the constituencies wholly or predominantly within the area of the historic county of Cambridgeshire, both before and after the administrative changes of 1889, 1965 and 1974. Constituencies predominantly within the area of the historic county of Huntingdonshire are listed at Parliamentary representation from Huntingdonshire. For more information on the constituencies currently covering the modern-day ceremonial county of Cambridgeshire, see List of parliamentary constituencies in Cambridgeshire.

List of constituencies
Key to abbreviations:

Type:
 * BC: Borough constituency
 * CC: County constituency
 * UC: University constituency.

Notes:
 * C1: historic county of Cambridgeshire (until 1889)
 * C2: administrative county of Cambridgeshire (1889–1974)
 * C3: non-metropolitan/ceremonial county of Cambridgeshire (from 1974)
 * IE: administrative county of the Isle of Ely (1889–1974).

Note: Dates of representation prior to 1654 are provisional. The constituencies which existed in 1707 were previously represented in the Parliament of England.

North West Cambridgeshire does not include any part of the historic county of Cambridgeshire. It combines parts of the historic counties of Huntingdonshire and Northamptonshire.