George Hornidge Porter, Baron Porter of Luddenham, OM, FRS (6 December 1920 – 31 August 2002) was a British chemist.
Porter was born in Stainforth, near Thorne, Yorkshire. He was educated at Thorne Grammar School, then won a scholarship to the University of Leeds and gained his first degree in chemistry. He then served in the Royal Navy Volunteer Reserve during the Second World War.
Porter then went on to do research at Cambridge under Norrish where he began the work that ultimately led to them becoming Nobel Laureates.