Timbisha Shoshone Homeland Act

Timbisha Shoshone Homeland Act - Mandates that all U.S. rights and interests to specified California and Nevada lands be held in trust by the United States for the benefit of the Timbisha Shoshone Tribe of California and Nevada. Provides development and other limitations with respect to such lands. Authorizes the Secretary of the Interior to purchase additional lands and appurtenant water rights in trust for the Tribe's use. Recognizes certain special use areas, including the mesquite use area, a buffer area, and the Timbisha Shoshone natural and cultural preservation area.

Provides that the trust lands shall constitute the Timbisha Shoshone Reservation.

Directs the National Park Service, the Bureau of Land Management, and the Tribe to develop protocols to review planned development in Death Valley National Park (the site of the Tribe's ancestral homeland). Authorizes cooperative agreements for providing training on the interpretation, management, protection, and preservation of the natural and cultural resources of the Tribe's special use areas.