Fort Nez Percés (or Fort Nez Percé, with or without the accent), later known as (Old) Fort Walla Walla, was a fortified fur trading post on the Columbia River on the territory of modern-day Wallula, Washington. Despite being named after the Nez Perce people, the fort was in the traditional lands of the Walla Walla people. Founded in 1818 by the North-West Company, it was after 1821 run by the Hudson's Bay Company until its closure in 1857.