Takhlakh Lake is a lake situated northwest of Mount Adams in the U.S. state of Washington. It is fed by a few small unnamed inflow creeks originating near Takh Takh Meadows, tributary to the Cispus River. A popular 53-site campground on the west side of the lake brings summer and early fall campers as well as hikers hiking the Takhlakh Loop Trail and the Takh Takh Meadows Trail, and nearby trails in the Mount Adams Wilderness. A day use area offers a picnic area and provides a boat ramp as well. The lake is one of the five lakes, all within a seven-mile radius, in the Midway High Lakes Area. It is managed by the Gifford Pinchot National Forest.