Thomas Theodore Crittenden (January 1, 1832 – May 29, 1909) was an American politician and military officer who served as the 24th Governor of Missouri from 1881 to 1885.

Shortly following Crittenden's marriage, the family moved to Lexington, Missouri, where he started a law practice.

During the American Civil War Crittenden was appointed a Colonel in the 7th Missouri State Militia Cavalry, fighting on the Union side.

Governor Willard Preble Hall appointed Crittenden to the post of Missouri Attorney General in 1864.

[1] Following his term, Crittenden moved his law practice to Warrensburg, Missouri, in partnership with Francis Cockrell.