Donald Edwin Young (born June 9, 1933) is an American politician and retired educator serving as the U.S. representative for Alaska's at-large congressional district since 1973. He is the Republican Party's longest-serving member of the House of Representatives and of Congress in history, having represented Alaska for 25 terms.
Young is currently the longest-serving member of Congress, as well as the last remaining member who has been in office since the Nixon Administration; he became the 45th dean of the House of Representatives on December 5, 2017, after John Conyers resigned. He is also the oldest current member of Congress. Before the special election following U.S. Representative Nick Begich's presumed death in a plane crash, Young was mayor of Fort Yukon from 1964 to 1967 and a member of the Alaska House of Representatives from 1967 to 1971 and the Alaska Senate from 1971 to 1973.