Rannoch Moor ( , Scottish Gaelic: Mòinteach Raineach/Raithneach) is an expanse of around 50 sqmi of boggy moorland to the west of Loch Rannoch in Scotland, where it extends from and into westerly Perth and Kinross, northerly Lochaber (in Highland), and the area of Highland Scotland toward its south-west, northern Argyll and Bute.