The Forty-second Oklahoma Legislature was a meeting of the legislative branch of the government of Oklahoma, composed of the Senate and the House of Representatives. It met in Oklahoma City from January 3, 1989, to January 8, 1991, during the term of Governor Henry Bellmon. In 1989, a ballot question designated the sine die adjournment day, or last day of session, as the last Friday in May. Combined with the 90-day requirement, this moved the session start day to February, leaving the original start day in January as an organizational day.