Mount Worthington is a 2,168-metre (7,113-foot) mountain summit in the Auriol Range of the Saint Elias Mountains, in Kluane National Park of Yukon, Canada.

[1] The mountain is situated above the shores of Kathleen Lake, 7.2 km (4 mi) northwest of Kings Throne Peak across the lake, and 19 km (12 mi) south-southeast of Haines Junction, Yukon.

The mountain can be seen from the Haines Highway as it prominently rises 1,570-metre (5,150-foot) above the lake.

The mountain's name was officially adopted August 12, 1980, by the Geographical Names Board of Canada.

[1] Based on the Köppen climate classification, Mount Worthington is located in a subarctic climate with long, cold, snowy winters, and mild summers.