The state legislature met in the Levy Building in Oklahoma City, beginning with a special session from November 28 to December 16, 1910, during the end of Governor Charles Haskell's term and ending with a regular session from January 3 to March 11, 1911, during the first year of the term of Governor Lee Cruce.

Lieutenant Governor J. J. McAlester served as the President of the Senate and Elmer Thomas served as the President pro tempore of the Oklahoma Senate.

Previous: 2nd Legislature • Next: 4th Legislature Lieutenant Governor J. J. McAlester served as the President of the Senate, which gave him a tie-breaking vote and allowed him to serve as a presiding officer.

[2] The Democratic caucus held the majority of seats in the Oklahoma House of Representatives.

W. B. Anthony, of Marlow, served as Speaker of the Oklahoma House of Representatives during the special session in 1910, and William A. Durant served as Speaker of the Oklahoma House of Representatives during the regular session in 1911.