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.

In the United States, the state legislature is the legislative branch in each of the 50 U.S. states.