The historic counties of England are areas that were established for administration by the Normans, in many cases based on earlier kingdoms and shires created by the Angles, Saxons, Jutes, Celts and others. They are alternatively known as ancient counties, traditional counties, former counties or simply as counties. In the centuries that followed their establishment, as well as their administrative function, the counties also helped define local culture and identity. This role continued even after the counties ceased to be used for administration after the creation of administrative counties in 1889, which were themselves amended by further local government reforms in the years following.

Shire is a traditional term for an administrative division of land in Great Britain and some other English-speaking countries such as Australia and the United States. It is generally synonymous with county. It was first used in Wessex from the beginning of Anglo-Saxon settlement, and spread to most of the rest of England in the tenth century. In some rural parts of Australia, a shire is a local government area; however, in Australia, it is not synonymous with a "county", which is a lands administrative division.