Parliamentary representation from Berkshire

The historic county of Berkshire, in the 21st century region of South East England, was represented in Parliament from the 13th century. This article provides a list of constituencies constituting the Parliamentary representation from Berkshire.

In 1889 Berkshire became an administrative county. In 1974 a new shire county of Berkshire lost the Abingdon area to Oxfordshire, while the Slough district was transferred from Buckinghamshire. In 1997 the ceremonial county of Berkshire was divided between several unitary authorities.

The first part of this article covers the constituencies wholly or predominantly within the area of the historic county of Berkshire, both before and after the administrative changes of 1889, 1974 and 1997. The second part refers to constituencies mostly in another historic county, which included some territory from the historic county of Berkshire. The summaries section only refers to the constituencies included in the first section of the constituency list.

List of constituencies
Article names are followed by (UK Parliament constituency). The constituencies which existed in 1707 were those previously represented in the Parliament of England.

Key to abbreviations:-
 * (Type) BC Borough constituency, CC County constituency.
 * (County in Notes) B1 historic county of Berkshire (to 1889), B2 administrative county of Berkshire (1889–1974), B3 shire/ceremonial county of Berkshire (from 1974), O shire county of Oxfordshire.