Mount Tlingit is a 12,606-foot (3,842-meter) mountain summit in Alaska, United States.

Mount Tlingit is part of the Fairweather Range which is a subrange of the Saint Elias Mountains.

The glaciated peak is located in Glacier Bay National Park, 2.3 mi (4 km) southeast of the Canada–United States border, and 4.8 mi (8 km) east of Mount Fairweather, which is the highest peak in the Fairweather Range.

The mountain's toponym has not been officially adopted by the United States Board on Geographic Names.

The months May through June offer the most favorable weather for viewing or climbing.