James Cecil Mottram (12 December 1879 – 4 October 1945) was a British physician and naturalist.
Mottram was born in Holt, Norfolk to James Alfred and Clara Ellen Swanzy.
In 1913 he published on the susceptibility of growing tissues to gamma radiation and he continued these studies.
He also conducted studies on the colours of butterflies (based on illustrations in Frederic Moore's Lepidoptera Indica).
[3][4] He then conducted research at the Radium Institute from 1919 and from 1937 at the Mount Vernon Hospital.