Crescent Lake is a lake found on the eastern slope of the Cascade Mountains, in the northwest corner of Klamath County, Oregon, United States. The unincorporated community of Crescent Lake Junction on Oregon Route 58 and Crescent Lake State Airport are located 2.5 miles (4.0 km) to the northeast of the lake. Crescent Lake is located within the Crescent Ranger District, as well as the Deschutes National Forest. The area has many trails for hiking, horseback riding, mountain biking, and areas for off-road vehicles. There are also a few developed campsites and boat ramps that provide opportunities for sailing, water skiing, camping and fishing.