The Thirty-first 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 7, 1967, to January 7, 1969, during the term of Governor Dewey Bartlett.^[1] This was the first Oklahoma state legislature that met under new requirements approved by voters in 1966 that the legislature hold annual, 90-day legislative sessions.^[1]

Clem McSpadden served as the President pro tempore of the Oklahoma Senate and Rex Privett served as the Speaker of the Oklahoma House of Representatives.

• First regular session: January 7-May 11, 1967^[1]
• Second regular session: January 6-May 5, 1968^[1]

Previous: 30th Legislature • Next: 32nd Legislature

• President of the Senate: Lieutenant Governor George Nigh^[2]
• President Pro Tem of the Senate: Clem McSpadden
• Speaker of the House: Rex Privett^[1]
• Speaker Pro Tempore: Joseph Mountford^[1]
• Majority Floor Leader: Leland Wolf^[1]
• Minority Leader of the House: James W. Connor^[1]

• Louise Stockton^[1]