Robert Lionel Archibald Goff, Baron Goff of Chieveley, PC, FBA (12 November 1926 – 14 August 2016) was an English barrister and judge who was Senior Lord of Appeal in Ordinary, the equivalent of today's President of the Supreme Court. Best known for establishing unjust enrichment as a branch of English law, he has been described by Andrew Burrows as "the greatest judge of modern times". Goff was the original co-author of Goff & Jones, the leading English law textbook on restitution and unjust enrichment, first published in 1966. He practised as a commercial barrister from 1951 to 1975, following which he began his career as a judge. He was appointed to the Judicial Committee of the House of Lords in 1986.