This is a list of Marilyn hills and mountains in the United Kingdom, Isle of Man and Ireland by height. Marilyns are defined as peaks with a prominence of 150 metres (492 ft) or more, regardless of height or any other merit (e.g. topographic isolation, as used in Munros). Thus, Marilyns can be mountains, with a height above 600 m (2,000 ft), or relatively small hills. As of April 2020 there were 2,011 recorded Marilyns.