Blacktail Butte, Mountain summit in Grand Teton National Park, Wyoming, United States.

Blacktail Butte is a butte rising 7,688 feet (2,343 m) from the Jackson Hole valley floor in Grand Teton National Park, Wyoming. It was originally named Upper Gros Ventre Butte in an early U.S. Geological Survey. Most of it is densely forested with lodgepole pine, Douglas fir and Engelmann spruce, with scattered pockets of aspen and several large sedimentary rock outcroppings used by rock climbers.

Blacktail Butte was first labelled Upper Gros Ventre Butte on an early survey by the U.S. Geological Survey. The present name, taken from the black-tailed deer, replaced that survey label. Local accounts tie the name to the north face and ridge lines, which read as black because they are so densely wooded.

The butte is named after the black-tailed deer. Local lore holds that the name also fits the look of the place: the north face and ridge lines are so heavily wooded that they appear black beside the sagebrush and scrub grass of the other slopes.

Several hiking trails can be accessed from Antelope Flats Road with parking available at the base for various activities. Trail conditions vary by season and elevation, so arriving prepared for changing weather is wise.

Local lore holds that the butte's name comes from its north face and ridge lines, so densely wooded that they look black next to the sagebrush and scrub grass of the other slopes. The same name belongs to Blacktail Pond, a scenic overlook nearby.