Sir Robert John Anderson Carnwath CVO (born 15 March 1945) is a British judge.
Carnwath was called to the Bar at Middle Temple in 1968. He practised in parliamentary law, planning and local government, revenue law and administrative law. He held the appointment of Junior Counsel to the Inland Revenue (Common Law) from 1980 to 1985, succeeded by Alan Moses, now Lord Justice Moses. He became a Queen's Counsel in 1985, and was Attorney General to the Prince of Wales from 1988 to 1994.
He was appointed as a High Court judge on 3 October 1994, in the Chancery Division, and received the customary knighthood. He served as Chairman of the Law Commission from 1999 to July 2002. He was promoted to the Court of Appeal on 15 January 2002 and, as is customary, became a member of the Privy Council.
He was formally sworn in as the first Senior President of Tribunals on 12 November 2007.
Carnwath plays the piano and viola and sings in the Bach Choir.
On 20 December 2011, Carnwath was announced as a new appointee to the Supreme Court of the United Kingdom.[1]