Elouise Pepion Cobell, also known as Yellow Bird Woman (November 5, 1945 – October 16, 2011) (Niitsítapi Blackfoot Confederacy) was a tribal elder and activist, banker, rancher, and lead plaintiff in the groundbreaking class-action suit Cobell v. Salazar (2009). This challenged the United States' mismanagement of trust funds belonging to more than 500,000 individual Native Americans. She pursued the suit from 1996, challenging the government to account for fees from resource leases.