Lake Tahoe is a large, freshwater lake in the Sierra Nevada mountains of the United States. It is located along the border of California and Nevada, west of Carson City. Lake Tahoe is the largest alpine lake in North America. Its depth is 1,645 ft (501 m) making it America's second-deepest, (Crater Lake in Oregon being the deepest at 1945 feet (594 m) deep).

The lake was formed about 2 million years ago and is a part of the Lake Tahoe Basin, the modern lake being shaped during the Ice Ages. It is known for the clarity of its water and the panorama of surrounding mountains on all sides. The area surrounding the lake is also referred to as Lake Tahoe, or simply Tahoe.

Lake Tahoe is a major tourist attraction for both California and Nevada. It is home to a number of ski resorts, and summer outdoor recreation. Snow and skiing are a significant part of the area's economy and reputation. Mountain and lake scenery are attractions throughout the year. The Nevada side also includes large casinos. Highways provide year-round access from Reno, Carson City and Sacramento.

Some of the highest peaks of the Lake Tahoe Basin that formed during process of Lake Tahoe creation are Freek Peak at 10,891 feet (3,320 m), Monument Peak at 10,067 feet (3,068 m), Pyramid Peak at 9,983 feet (3,043 m, in the Desolation Wilderness), and Mount Tallac at 9,735 feet (2,967 m).

The area around Lake Tahoe was originally inhabited by the Washoe tribe of Native Americans. Lake Tahoe was the center and heart of Washoe Indian territory, including the upper valleys of the Walker, Carson, and Truckee Rivers.

The Lake Tahoe Bicycle Coalition’s mission is to promote livable and sustainable communities by encouraging more bicycle/pedestrian-friendly facilities and promoting educational programs in which residents and visitors can safely and conveniently ride and walk on a more frequent basis.