George Parker Bidder (marine biologist)

George Parker Bidder
Born	(1863-05-21)21 May 1863 London, UK
Died	31 December 1953(1953-12-31) (aged 90) Cambridge, UK
Nationality	British
Alma mater	Trinity College, Cambridge
Known for	Sponges; Bidder's hypothesis
Scientific career
Fields	Marine biology
Institutions	Marine Biological Association The Company of Biologists

George Parker Bidder (21 May 1863 – 31 December 1953) was a British marine biologist who primarily studied sponges. He was the President of the Marine Biological Association (MBA) from 1939 to 1945.