Mount Cardigan is a prominent bare-rock summit in the towns of Orange and Alexandria in western New Hampshire, USA.

While its peak is only 3,155 feet (962 m) above sea level, it has extensive areas of bare granite ledges and alpine scrub, giving it the feel to hikers of a much higher mountain.

The Civilian Conservation Corps helped develop the alpine ski trail network, still used today on the mountain's east side.

On the summit and to the east on the Clark Trail, the bedrock is the Kinsman Granodiorite of the Early Devonian Cardigan Pluton (a foliated granitic body with large megacrysts of potassium feldspar).

The Littleton Formation rocks were once deep water sediments of the Bronson Hill Island Arc and were deformed and metamorphosed during the Acadian orogeny.