Glen Affric (Scottish Gaelic: Gleann Afraig) is a glen south-west of the village of Cannich in the Highland region of Scotland, some 15 miles (25 kilometres) west of Loch Ness. The River Affric runs along its length, passing through Loch Affric and Loch Beinn a' Mheadhoin. A minor public road reaches as far as the end of Loch Beinn a' Mheadhoin, but beyond that point only rough tracks and footpaths continue along the glen.
Often described as the most beautiful glen in Scotland, Glen Affric contains the third largest area of ancient Caledonian pinewoods in Scotland, as well as lochs, moorland and mountains.The area is a Caledonian Forest Reserve, a national scenic area and a national nature reserve, as well as holding several other conservation designations.