Mount Wrather is a 5,968-foot (1,819 m) mountain summit located in the Boundary Ranges, in the U.S. state of Alaska.

The peak is situated within Tongass National Forest, immediately east of the Mendenhall Glacier, 12 mi (19 km) north of Juneau, Alaska, and 9 mi (14 km) north of Juneau International Airport.

Although modest in elevation, relief is significant since the mountain rises up from sea-level at Auke Bay in less than nine miles.

The mountain's name was officially adopted in 1968 by the USGS to honor William Embry Wrather (1883–1963), the 6th Director of the United States Geological Survey from 1943 to 1956.

This climate supports the Mendenhall Glacier on its west aspect, and Juneau Icefield to the mountain's northeast.