Eastern Shoshone are Shoshone who primarily live in Wyoming and in the northeast corner of the Great Basin where Utah, Idaho and Wyoming meet and are in the Great Basin classification of Indigenous People. They lived in the Rocky Mountains during the 1805 Lewis and Clark Expedition and adopted Plains horse culture in contrast to Western Shoshone that maintained a Great Basin culture.

The Shoshone or Shoshoni are a Native American tribe with four large cultural/linguistic divisions:Eastern Shoshone: Wyoming Northern Shoshone: southern Idaho Western Shoshone: Nevada, northern Utah Goshute: western Utah, eastern Nevada