Oregon's Territorial Legislature was a bicameral legislative body created by the United States Congress in 1848 as the legislative branch of the government of the Oregon Territory. The upper chamber Council and lower chamber House of Representatives first met in July 1849; they served as the region's legislative body until Oregon became a state in February 1859, when they were replaced by the bicameral Oregon State Legislature.

The Oregon Legislative Assembly is the state legislature for the U.S. state of Oregon. The Legislative Assembly is bicameral, consisting of an upper and lower house: the Senate, whose 30 members are elected to serve four-year terms; and the House of Representatives, with 60 members elected to two-year terms. There are no term limits for either house in the Legislative Assembly.