Mount Allen is the name of several places and things worldwide:
Places
Antarctica
Australia
- Mount Allen, New South Wales
- Mount Allen station, Northern Territory, a former pastoral lease on which Yuelamu is located (also spelt Allan)
Canada
- Mount Allen (Canada), a mountain located on the Continental Divide and British Columbia-Alberta border in Canada
New Zealand
- Mount Allen (Otago), in the Criffel Range
- Mount Allen (Stewart Island)
United States
- Mount Allen (Alaska), in Wrangell Mountains
- Mount Allen, also known as Sandstone Peak, in the Santa Monica Mountains, California
Other uses
- Mount Allen Junior College, former name of Mount Olive College, North Carolina