William George Meany (August 16, 1894 – January 10, 1980) was an American labor union administrator for 57 years. He was a vital figure in the creation of the AFL–CIO and served as its first president, from 1955 to 1979.
Meany, the son of a union plumber, became a plumber himself at a young age. Within a decade, he was a full-time union official. As an officer of the American Federation of Labor, he represented the AFL on the National War Labor Board during World War II. He held the position of AFL president from 1952 to 1955.
In 1952, Meany proposed a merger of the AFL with the Congress of Industrial Organizations (CIO). He managed the negotiations until the merger was completed in 1955, creating the largest federation of unions in the United States.