William Clark Birthright (May 27, 1887 – April 18, 1970[1]) was an American labor union leader.
Born in Helena, Arkansas, Birthright moved with his family to Nashville at an early age, before becoming a barber.
In 1907, he joined the Journeymen Barbers' International Union of America, and was almost immediately elected as vice-president of his local.
He was convinced to stand town as president, but contested the election for the secretary-treasurer post, in which he was defeated by E. M.
[6][7] In 1965, he was also persuaded to resign as a vice-president of what had become the AFL-CIO, as part of a clear-out of the older members of the federation's executive.