The Eighth Oklahoma Legislature was a meeting of the legislative branch of the government of Oklahoma, composed of the Oklahoma Senate and the Oklahoma House of Representatives. The state legislature met in Oklahoma City, in regular session from January 4 to April 2, 1921, and in special session from April 25 to May 21, 1921, during the third year of the term of Governor James B.A. Robertson. It was the first time, Republicans took control of the Oklahoma House of Representatives. In 1920, Bessie McColgin, a Republican, became the first woman elected to the Oklahoma House of Representatives. Lamar Looney, Oklahoma's first female state senator and a Democrat, was also elected in 1920.