George Peabody Wetmore (August 2, 1846 – September 11, 1921) was an American politician who was the 37th Governor of, and a Senator from, Rhode Island.

He was a member of the commission which oversaw construction of the new Rhode Island State House at Providence.

The three-way contest between Wetmore, Colt and Democrat Robert Hale Ives Goddard resulted in months of deadlocked ballots and a vacant seat in Rhode Island's delegation to the 60th Congress beginning on March 4, 1907.

Eventually Colt withdrew, and Wetmore returned to the Senate on January 22, 1908, and served until March 3, 1913.

He was also a member of the Appropriations, District of Columbia, Naval Affairs, Public Buildings and Grounds, and other committees.

[4] He had a deep interest in the building up of the Navy and the development of the naval base in Narragansett Bay.

He was greatly interested in the improvement and development of Washington and the District of Columbia on a definite artistic plan, and was particularly identified with the legislation creating the National Commission of Fine Arts.

[4] In private life Mr. Wetmore was for many years associated with various organizations for promoting the fine arts.

Mr. and Mrs. Wetmore, who were included in Ward McAllister's "Four Hundred", were the parents of four children, two sons who died and two daughters that lived together at the family's Newport estate until their deaths:[1] His first cousin, once removed, Mary Toppan Pickman, married Massachusetts Congressman and diplomat George B. Loring.