John Geoffrey Tristram Lawrence, 4th Baron Trevethin and 2nd Baron Oaksey OBE (21 March 1929 – 5 September 2012) was a British aristocrat, horse racing journalist, television commentator and former amateur jockey. He was twice British Champion Amateur Jump Jockey, before becoming a celebrated journalist and recognisable racing personality both on television and through his charitable work for the , which he helped establish. He has been described as "quite possibly the outstanding racing figure of modern times, touching so many via his compelling writing, broadcasting, race-riding and tireless fund-raising".