Sam Rayburn, American lawyer and politician, 48th Speaker of the United States House of Representatives (d. 1961)
Samuel Taliaferro Rayburn (January 6, 1882 – November 16, 1961) was an American politician who served as the 43rd speaker of the United States House of Representatives. He was a three-time House speaker, former House majority leader, two-time House minority leader, and a 24-term congressman, representing Texas's 4th congressional district as a Democrat from 1913 to 1961. He holds the record for the longest tenure as Speaker of the United States House of Representatives, serving for over 17 years (among his three separate stints).

Born in Roane County, Tennessee, Rayburn moved with his family to Windom, Texas, in 1887. After a period as a school teacher, Rayburn won election to the Texas House of Representatives and graduated from the University of Texas School of Law. He won election to the United States House of Representatives in 1912 and continually won re-election until his death in 1961, serving 25 terms all told. Rayburn was a protege of John Nance Garner and a mentor to Lyndon B. Johnson.

Rayburn was elected House Majority Leader in 1937 and was elevated to the position of Speaker of the House after the death of William B. Bankhead. He led the House Democrats from 1940 to 1961, and served as Speaker of the House from 1940 to 1947, 1949 to 1953, and 1955 to 1961. Rayburn also served twice as House Minority Leader (1947 to 1949 and 1953 to 1955) during periods of Republican House control. He preferred to work quietly in the background and successfully used his power of persuasion and charisma to get his bills passed due to having to navigate the post-Joseph Cannon era when each individual committee chairman had immense power in the House.

Along with Senate Majority Leader Lyndon Johnson, Rayburn refused to sign the 1956 Southern Manifesto and helped shepherd to passage the Civil Rights Acts of 1957 and 1960, the first civil rights bills passed by the U.S. Congress since the Reconstruction Era (1863–1877). Rayburn was also influential in the construction of U.S. Route 66. He served as Speaker until his death in 1961, and was succeeded by John W. McCormack.