Chinookan is a small family of languages spoken in Oregon and Washington along the Columbia River by Chinook peoples.

Chinookan peoples include several groups of indigenous people of the Pacific Northwest in the United States speaking the Chinookan languages. In the early 19th century, the Chinookan-speaking peoples resided along the lower and middle Columbia River but in present-day Oregon and Washington. The Chinook tribes were those encountered by the Lewis and Clark Expedition in 1805 on the lower Columbia.