Catherine Hay Thomson (died 1928) was a Scottish-born Australian undercover journalist, literary agent and educator.
[1] Thomson began writing investigative articles, being referred to in The Bulletin in 1886 as "the female 'Vagabond' of Melbourne".
[2][3] Thomson worked as an undercover journalist, disguising herself as a man to visit brothels and taverns investigating corruption which was exposed in her newspaper articles.
[4] Thomson was one of the founders of the Austral Salon in 1890,[1] a women’s club to foster literature, music and the arts.
[2] In 1899, Thomson and Evelyn Gough became joint proprietors of The Sun: An Australian Journal for the Home and Society.