An Teallach is a mountain group in Wester Ross, in the Northwest Highlands of Scotland. It lies west of Dundonnell Forest, north of Loch na Sealga, and south of Little Loch Broom. Its highest peaks are the Munros of Bidean a' Ghlas Thuill at 1062 m (3484 ft), and Sgùrr Fiona at 1058 m (3473 ft).