A United States National Park in northwestern Wyoming. At approximately 310,000 acres, the park includes the major peaks of the 40-mile-long (64 km) Teton Range as well as most of the northern sections of the valley known as Jackson Hole. It is only 10 miles (16 km) south of Yellowstone National Park, to which it is connected by the National Park Service-managed John D. Rockefeller, Jr. Memorial Parkway. Along with surrounding National Forests, these three protected areas constitute the almost 18,000,000-acre.

Greater Yellowstone Ecosystem, one of the largest intact mid-latitude temperate ecosystems in the world. Human history of the Grand Teton region dates back at least 11,000 years.

Grand Teton National Park is named for Grand Teton, the tallest mountain in the Teton Range.

Grand Teton National Park is a popular destination for mountaineering, hiking, fishing and other forms of recreation