Cairn Mon Earn or Cairn-mon-earn is a hill in Aberdeenshire, Scotland.
Cairn Mon Earn (OS: Cairn-mon-earn) lies within the Durris Forest, in the Mounth region of the Grampian Mountains.
Situated close to the summit is a substantial burial cairn of the Early Bronze Age.
Trig point) is located on part of the cairn.
Roman legions marched from Raedykes to Normandykes Roman Camp, somewhat east of Cairn Mon Earn as they sought higher ground evading the bogs of Red Moss and other low-lying mosses including the Burn of Muchalls.