Charles Ernest Overton (1865–1933) was a British physiologist and biologist, now regarded as a pioneer of the theory of the cell membrane.
In the last years of the 19th century Overton did experimental work, allowing the distinction to be drawn between the cell wall of plants and their cytoplasmic membrane. He studied the permeability of a range of biological materials to around 500 chemical compounds.
- Membrane Permeability: 100 Years Since Ernest Overton: 100 Years Since Ernest Overton. Academic Press. 21 May 1999. p. 1. ISBN 978-0-08-058519-2.
- Henry Harris (2000). The Birth of the Cell. Yale University Press. pp. 152–. ISBN 978-0-300-08295-1.
- Randy O. Wayne (15 September 2009). Plant Cell Biology: From Astronomy to Zoology. Academic Press. p. 18. ISBN 978-0-08-092127-3.