Blacktail Butte () is a butte mountain landform rising from Jackson Hole valley in Grand Teton National Park in the U.S. state of Wyoming. Blacktail Butte was originally named Upper Gros Ventre Butte in an early historical survey conducted by the U.S. Geological Survey. Most of Blacktail Butte is densely forested with a mixed fir forest of lodgepole pine, Douglas fir and Engelmann spruce, with scattered pockets of aspen. There are several large sedimentary rock outcroppings, which are used by rock climbers. This butte is a principal landmark in Jackson Hole, with much of the Jackson Hole valley floor and many portions of the Teton Range visible from its hillsides.