Alfred Arthur Thibaudeau (December 1, 1860 – August 15, 1926) was a Canadian politician.

He was the president of the Wholesale Dry-Goods Association, and was a member of Council of the Montreal Board of Trade.

He was a director of the Notre Dame Hospital, Governor of Université Laval, director of the Great West Life Assurance Company, and of the Park & Island Railway Co. of Montreal.

He was appointed to the Senate in August, 1896 on the advice of Wilfrid Laurier representing the senatorial division of De la Vallière, Quebec.

This article about a Quebec Member of the Canadian Senate is a stub.