Percy Cyril Claude Garnham CMG FRS (15 January 1901 – 25 December 1994),[1] was a British biologist and parasitologist.

In 1928 he was awarded an MD degree by the University of London for his work on malaria in Kenya and also a Gold Medal.

This introduced him to a very wide range of tropical diseases of humans and animals and their vectors as he worked on identification and control.

These included Alwen M. Evans, an expert on mosquitoes and with whom he co authored work on the distribution of the Anopheles funestus group around the city of Kisumu and the coast.

Garnham became the Malaria Research Officer and then Director of the new Division of Insect Borne Diseases in Nairobi.

The following year, working with Henry Shortt, he identified the stage of the malaria parasite within the liver where it changes from the sporozoite to merozoite form.

[6][7] He officially retired in 1968 but continued to work for 12 years as a senior research fellow at Imperial College based at Silwood Park.