The thirty-fifth Oregon Legislative Assembly convened in 1929 for its biennial regular session, starting January 14 and finishing March 4. Republicans controlled both chambers with overwhelming majorities. Only four Democrats, two in the House and two in the Senate, were members of the thirty-fifth Legislative Assembly. The body held no special sessions; no such sessions were held at all between 1921 and 1933.

Dorothy McCullough Lee was an American politician and attorney in the U.S. state of Oregon. She was the first female mayor of Portland, Oregon; she also served on the Oregon Legislative Assembly, on the Multnomah County Commission, and on the United States Parole Commission.