William J. McSorley

William Joseph McSorley (December 13, 1876 – December 16, 1961) was an American labor union leader.

Born in Philadelphia, in 1899 McSorley was a founder of a local of the International Union of Wood, Wire and Metal Lathers. In 1904, he was elected as president of the international union. That year, he attended the convention of the American Federation of Labor, and he attended every subsequent one of its conferences, and those of the AFL-CIO until his death.

In 1905, McSorley was elected to the board of the Structural Building Trades Alliance. Two years later, he helped found the AFL Building Trades Department. In 1926, he left his post with the Lathers to become president of the Building Trades Department. He served until 1929, when he was re-elected as president of the Lathers.

McSorley also served as an AFL organizer in 1916, and served on the Committee on Labor of the Advisory Commission of the Council of National Defense. In 1955, he was an AFL delegate to the congress of the International Confederation of Free Trade Unions. That year, he retired from his union posts.

McSorley's son, also William J. McSorley, became a prominent labor unionist, serving as assistant to the president of the Building Trades Department.