William Wyatt Bibb (2 October 1781 – 10 July 1820) was a United States Senator from Georgia. He was the first Governor of the U.S. state of Alabama. Bibb County, Alabama, and Bibb County, Georgia, are named for him.
He was a member of the Democratic-Republican political party. Bibb served as governor of the Alabama Territory from August 1817 to December 1819, and as the first elected governor of the state of Alabama from December 1819 to his death on July 10, 1820.