The 83rd United States Congress was a meeting of the legislative branch of the federal government of the United States in Washington, D.C. from January 3, 1953, until January 3, 1955, during the last two weeks of the Truman administration, with the remainder spanning the first two years of Dwight Eisenhower's presidency. It was composed of the Senate and the House of Representatives. The apportionment of seats in the House was based on the 1950 U.S. census.

The positions of majority leader and minority leader are held by two United States senators and people of the party leadership of the United States Senate. They serve as a chief spokespersons for their respective political parties holding the majority and the minority in the United States Senate. They are each elected as majority leader and minority leader by the senators of their party caucuses: the Senate Democratic Caucus and the Senate Republican Conference.