White Grass Dude Ranch, Dude ranch in Teton County, US.

White Grass Dude Ranch is a complex of 13 log buildings in Grand Teton National Park, arranged along a one-lane road. The Main Cabin, with kitchen and dining hall, is believed to be the original Hammond residence; guest cabins lie north of the dining hall and on both sides of the road. Roofs vary between green and red asphalt roll roofing.

Harold Hammond and George Tucker Bispham founded the property in 1913 and converted it to a dude ranch operation in 1919, which continued until 1985. The shift from cattle ranching to a guest lodge marked a turning point in the region's economic history.

This property represents early tourism development in Jackson Hole, where working cattle ranches became guest lodges and shaped western hospitality traditions. Visitors can still see how this transformation is reflected in the layout and use of the buildings today.

The ranch sits in the White Grass Valley, west of the southern Teton Range and close to the southern end of Jackson Hole. The complex is organised around a single-lane central road: the lodge and dining hall stand near the middle, with the cabins to the north and on both sides of the road. The buildings are used by the Western Center for Historic Preservation for training, so access is not open like a museum.

The ranch once had a concrete-lined swimming pool fed by water diverted from Stewart's Draw, which also supplied a pond called Lake Ingeborg, named after Frank Galey's wife Inge. The cold ditch water was used to chill drinks for guests. Harold Hammond also ran a fox farm on the ranch, selling pelts to dudes from 1925 until it closed in 1966.