thumb|upright=1.35|The Bridge over Lake Taneycomo between [[Branson, Missouri|Branson and Hollister, Missouri with Branson Landing and the Branson Convention Center in the background]]
Lake Taneycomo is a man-made lake or reservoir on the White River in the Ozark Mountains of Taney County, Missouri. The reservoir's name is a portmanteau for the county and state in which it is located: Taney County, MO.
Lake Taneycomo originated when the White River was confined by the completion of the Powersite Dam, near Forsyth, Missouri, in 1913. From 1913 until 1958 it was a warm water lake. In the 1920s and 1930s, tourists began to be drawn to the lake and its nearby communities, Branson and Rockaway Beach. Water skiing, boating, fishing, sunning and swimming drew folks to the warm waters of Lake Taneycomo. Restaurants, lodging and amusement attractions such as bumper cars and skee ball were plentiful in the towns along the lake.
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Image:Lake Taneycomo.jpg|Lake Taneycomo as seen from an observation point on Route 165. The dam in the background impounds Table Rock Lake.
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The completion of Table Rock Dam in 1958 changed the source of water to Taneycomo from that of the White River's flowing waters to the bottom tailwater of Table Rock Lake from the dam spillway and made it into a cold water lake. The clear cold waters from the deep tailwaters of Table Rock Lake pour out of the dam into Lake Taneycomo. The cold water made swimming and water sports undesirable. Tourism declined sharply in Rockaway Beach and started shifting to Branson and Table Rock Lake. In 1957, the Missouri Department of Conservation constructed the Shepherd of the Hills Trout Hatchery. All methods of trout fishing — fly fishing, artificial bait, and live bait fishing — may be used year-round to pursue trout that inhabit the waters of Lake Taneycomo.
Lake Taneycomo has the characteristics of both a river and a lake. The shallow colder water, located near the Table Rock Dam, averages , resembles a river and permits wading and bank fishing for trout.