George S. Boutwell, American lawyer and politician, 28th United States Secretary of the Treasury (died 1905)

George Sewall Boutwell was an American politician, lawyer, and statesman from Massachusetts. He served as Secretary of the Treasury under President Ulysses S. Grant, the 20th governor of Massachusetts, a U.S. senator and representative from Massachusetts, and the first Commissioner of Internal Revenue under President Abraham Lincoln. He was a leader in the impeachment of President Andrew Johnson and served as a House manager (prosecutor) in the impeachment trial.

The United States secretary of the treasury is the head of the United States Department of the Treasury, and is the chief financial officer of the federal government of the United States. The secretary of the treasury serves as the principal advisor to the president of the United States on all matters pertaining to economic and fiscal policy. The secretary is, by custom, a member of the president's cabinet and, by law, a member of the National Security Council, and fifth in the U.S. presidential line of succession.