This is a list of Hewitt mountains in England, Wales and Ireland by height.

Hewitts are defined as "Hills in England, Wales and Ireland over two thousand" feet 2,000 feet (609.6 m) in height, the general requirement to be called a "mountain" in the British Isles, and with a prominence above 30 metres (98.4 ft); a mix of imperial and metric thresholds.

[2] The Hewitt classification was suggested by Alan Dawson in his 1992 book, "The Relative Hills of Britain".

[7] Hewitts were designed to address one of the criticisms of the 1990 Nuttall classification, by requiring hills to have a relative height of 30 metres (98 ft), a threshold that the UIAA had set down in 1994 for an "independent" peak.

The DoBIH uses the following codes for the various classifications of mountains and hills in the British Isles, which many of the above peaks also fall into:[16][17]