The City of Lone Tree is a home rule municipality located in northern Douglas County, Colorado, United States.

The city annexed the territory of the now-defunct University of Colorado South Denver's campus, the former site of The Wildlife Experience, in 2017.

The Lone Tree Link operates free bus service along Park Meadows Drive during the weekdays, serving Lincoln Station and four other stops in the city.

Lone Tree is approximately 30 minutes from Red Rocks, which offers more hiking, biking, and running trails as well as a venue for outdoor concerts.

Additionally, its suburban location in South Metro Denver makes Lone Tree not far from Castle Rock, which offers other activities.