Loch Oich (Scottish Gaelic: Loch Omhaich) is a freshwater loch in the Highlands of Scotland which forms part of the Caledonian Canal, of which it is the highest point. This narrow loch lies between Loch Ness (to the Northeast) and Loch Lochy (to the Southwest) in the Great Glen. It is fed by the River Garry (from Loch Garry) from the West, and feeds the River Oich from its North end. The Laggan locks separate it from Loch Lochy.
