Michael J. Colleran (1884 – November 18, 1940) was an American labor union leader.
[1] In 1923, he was elected as president of the new Manhattan Building Trades Council.
[2] That year, he was indicted for conspiracy to hamper building operations, alongside 35 other members of his local.
[3] The indictments were dismissed by Jeremiah T. Mahoney of the New York Supreme Court, after a grand jury disagreed with the verdict, and Colleran agreed to end the practices.
[1] He represented the American Federation of Labor (AFL) at the British Trades Union Congress in 1934.