Hugo Ernst (December 11, 1876 – July 22, 1954) was a Croatian-born American labor union leader.
Hugo studied journalism, and when he was 26, emigrated to New York City to become a reporter on a Croatian-language newspaper.
After the event, he moved to San Francisco, around which time, he joined local 30 of the Hotel and Restaurant Employees' International Alliance.
[1] Ernst later became secretary of the local, which organized low-paid workers, and he became the leader of opposition to Jere L. Sullivan's craft unionism.
He also served as a vice-president of Americans for Democratic Action, and of the Labor League for Political Education.