Frank Stanley Cotton (30 April 1890 – 23 August 1955) was an Australian lecturer in physiology, specialising in the study of the effects of physical strain on the human body.

His father was the Australian politician Francis Cotton (1857–1942) who was a strong proponent of Georgism and played a key role in the rise of the Labour movement.

[3] In 1917, Cotton married Catherine Drummond Smith, a geology demonstrator who taught at the University of Sydney.

[2][6] Cotton was also responsible for the ergometer, a machine to test the athletic potential of sportsmen and women.

The Australian swimming coach, Forbes Carlile, began his career as an assistant to Cotton.