Mirror Lake is a small lake located on the Tenaya Creek in the Yosemite National Park.

Mirror Lake is in the Tenaya Canyon between North Dome and Half Dome. It is not actually a lake but a seasonal pool of water. It will have its highest level of water in the spring and summer months when snowmelt flows from the Tenaya Creek.

The Mirror Lake Trail is a 3.2 kilometre (2 mile) roundtrip to the lake and back. To complete a full loop around the lake is 8 kilometres (5 miles).

It provides view of the base of the Half Dome, which is reflected in the pool of water.