Henry Hicks, MRCS, FRS (26 May 1837 – 18 November 1899) was a Welsh physician, surgeon, Member of the Royal College of Surgeons (MRCS), geologist, President of the Geological Society and Fellow of the Royal Society (FRS).
He studied the Precambrian rocks of Anglesey, Caernarvonshire and Pembrokeshire, the Devonian rocks of Devon and Somerset, cave deposits and other Quaternary sediments.