Alfred Thompson "Tom" Denning, Baron Denning, OM, PC, DL, KC (23 January 1899 – 5 March 1999), commonly known as Lord Denning, was a British lawyer and judge. He gained degrees in mathematics and law at Oxford University, although his studies were disrupted by his service in the First World War. He then began his legal career, distinguishing himself as a barrister and becoming a King's Counsel in 1938.