Australian journalist who promoted trade unionism, women's suffrage, and social reform in Australia and the United States.

In 1884 Henry began a 20-year career writing for the Melbourne Argus and the Australasian and also lectured throughout the country on labour problems, juvenile reform, and women's rights. In 1906 she went to the United States, where she lectured on Australian reform movements. She joined the Chicago Women's Trade Union League, and from 1911 to 1915 she edited its publication, Life and Labor. Henry worked for the extension of the league in the United States and is credited with bringing an international perspective to the women's trade union movement.