Ben Wyvis, mountain in the northern Highlands, Highland council area, Scotland, whose summit stands some 9 miles (14 km) northwest of Dingwall on the Cromarty Firth, which is an inlet of the Moray Firth. The mountain has an elevation of 3,429 feet (1,045 metres). On its heights is Castle Leod (1616) and at its foot is the 18th-century resort spa of Strathpeffer.