Patrick Vincent Mcnamara (October 4, 1894-April 30, 1966) was a Democratic United States Senator (1955 until 1966) from the state of Michigan.
McNamara was born in North Weymouth, Massachusetts and attended the public schools in Weymouth and the Fore River Apprentice School in Quincy. He moved to Detroit, Michigan, in 1921, and became active in union and civic affairs. He worked in the construction industry 1921-1955. He was director of the Detroit area of the Office of Price Administration, Rent Division 1942-1945. He was vice president of Stanley-Carter Company 1946-1954. He was a member of the Detroit City Council 1946-1947 and the Detroit Board of Education 1949-1955.
McNamara was elected as a Democrat to the United States Senate in 1954 and was reelected in 1960, serving from January 3, 1955, until his death in Bethesda, Maryland. He was chairman of the U.S. Senate Special Committee on Aging in the Eighty-seventh Congress, the U.S. Senate Committee on Public Works in the Eighty-eighth and Eighty-ninth Congresses. He is interred in Mt. Olivet Cemetery in Detroit.
McNamara was a member of the Americans for Democratic Action. The Patrick V. McNamara Federal Building was named for him.