The English Lowlands beech forests is a terrestrial ecoregion in the United Kingdom, as defined by the World Wide Fund for Nature (WWF) and the European Environment Agency (EEA). It covers 45,600 km2 (17,600 sq mi) of Southern England, approximately as far as the border with Devon and South Wales in the west, into the Severn valley in the north-west, into the East Midlands in the north, and up to the border of Norfolk in the north-east. The WWF code for this ecoregion is PA0421.

The Celtic broadleaf forests are a terrestrial ecoregion that covers most of the islands of Great Britain and Ireland.