Oregon Country or "Oregon" (to be distinguished from the State of Oregon) was a predominantly American term referring to a region of the Pacific Northwest of North America. The region was occupied by British and American settlers, pioneers, and fur traders from the late 19th century until the Oregon Treaty of 1846 established a clear boundary between present-day Washington and British Columbia.

The Oregon Country consisted of the land north of 42°N latitude, south of 54°40'N latitude, and west of the Rocky Mountains to the Pacific Ocean. The area now forms part of the present day Canadian province of British Columbia, all of the US states of Oregon, Washington, and Idaho, and parts of Montana and Wyoming. The British presence in the region was generally administered by the Hudson Bay Company, whose Columbia District comprised most of the Oregon Country; north of the Thompson River was part of the New Caledonia District, which extended considerably north beyond 54°40'N.