Carl Hayden (October 2, 1877 – January 25, 1972) was a U.S. Senator and Representative from the state of Arizona. He was a Democrat. He was succeeded by Barry Goldwater. He is one of the longest serving members of congress in U.S. history.
- HAYDEN, Carl Trumbull, (1877 - 1972). Biographical Directory of the United States Congress. Retrieved January 10, 2017.
- Carl Hayden sets congressional longevity record, Feb. 19, 1962
- Profile at the Biographical Directory of the United States Congress