John Cyril "Jack" Cato (4 April 1889 – 14 August 1971) was a significant Australian portrait photographer in the Pictorialist style, operating in the first half of the twentieth century. He was the author of the first history of Australian photography; The Story of the Camera in Australia (1955).
- I can take it: the autobiography of a photographer, Melbourne: Georgian House, 1947.
- The story of the camera in Australia, Melbourne: Georgian House, 1955.
- I. Cosier, Jack Cato, University of Melbourne, 1980 (M.A. thesis).