Tail Feather Peak is a 4,960-foot-elevation (1,512-meter) mountain summit in the U.S. state of Alaska. This mountain is located 14 miles (23 km) southeast of Anchorage in the Chugach Mountains and Chugach State Park. Precipitation runoff from the mountain drains into Ship Creek, thence Knik Arm. Topographic relief is significant as the summit rises 2,560 feet (780 m) in 0.75 mile (1.2 km) on the west slope. This mountain's toponym has not been officially adopted by the U.S. Board on Geographic Names.

Based on the Köppen climate classification, Tail Feather Peak is located in a subarctic climate zone with long, cold, snowy winters, and cool summers. Weather systems coming off the Gulf of Alaska are forced upwards by the Chugach Mountains (orographic lift), causing heavy precipitation in the form of rainfall and snowfall. Winter temperatures can drop below −10 °F with wind chill factors below −20 °F. The months May through June offer the most favorable weather for climbing or viewing.

• List of mountain peaks of Alaska
• Geography of Alaska

• Weather: Tail Feather Peak