Grand Mogul, Mountain summit in Sawtooth Range, Idaho, US

Grand Mogul is a 9,733-foot (2,967 m) peak in the Sawtooth Range of Idaho, within the Sawtooth Wilderness of Sawtooth National Recreation Area in Custer County. It rises at the southwest end of Redfish Lake, 0.95 mi (1.53 km) north-northwest of Little Decker and 1.7 mi (2.7 km) southeast of Mount Heyburn.

The sources record no documented first ascent, climbers, or dates for Grand Mogul; the 1957 Iowa Mountaineers account is not supported. What is established is its setting: a 9,733-foot (2,967 m) peak at the southwest end of Redfish Lake in the Sawtooth Wilderness, Custer County, Idaho, 0.95 mi (1.53 km) north-northwest of Little Decker and 1.7 mi (2.7 km) southeast of Mount Heyburn.

The peak rises at the southwest end of Redfish Lake, 0.95 miles north-northwest of Little Decker, its line parent, and 1.7 miles southeast of Mount Heyburn. Its name echoes the mountain's massive form above the lake, and the peak stands within the Sawtooth Wilderness of Sawtooth National Recreation Area in Custer County.

Grand Mogul rises at the southwest end of Redfish Lake, 0.95 mi (1.53 km) north-northwest of Little Decker and 1.7 mi (2.7 km) southeast of Mount Heyburn, inside the Sawtooth Wilderness of Sawtooth National Recreation Area in Custer County. Approach from the Redfish Lake area, where parking and basic facilities sit, and allow several hours on foot; a summer boat shuttle across the lake shortens the approach.

The Grand Mogul stands 0.95 miles (1.53 km) north-northwest of Little Decker, which is its line parent, the nearest higher peak connected to it by a ridge. It rises at the southwest end of Redfish Lake, 1.7 miles (2.7 km) southeast of Mount Heyburn, so the peak frames the lake's southern shore.