George Parker Bidder (marine biologist)

George Parker Bidder
Born(1863-05-21)21 May 1863
London, UK
Died31 December 1953(1953-12-31) (aged 90)
NationalityBritish
Alma materTrinity College, Cambridge
Known forSponges; Bidder's hypothesis
Scientific career
FieldsMarine biology
InstitutionsMarine 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.