Sir Charles Antony St. John Gray QC (born 6 July 1942) is a retired British barrister and judge (Mr. Justice Gray), who specialised in intellectual property, copyright, privacy and defamation cases. As a judge, he presided over the trial of David Irving's libel lawsuit against Professor Deborah Lipstadt and Penguin Books over claims that he was a Holocaust denier and who delivered judgement against Irving.
Gray attended Trinity College, Oxford, earning a bachelor's degree in 1961. He was called to the bar by Lincoln's Inn and began his practise in 1967. Cases he tried include Crossman Diaries, Saatchi v Saatchi & Saatchi, Elton John v MGN, Aldington v Tolstoy, Aitken v Granada and Guardian. He took silk in 1984 and was elected a bencher in 1993.
Gray retired in 2008 but occasionally presided over the Queen's Bench until 2011. He serves as an adjudicator in lawsuits against News Group Newspapers brought by people whose phones had been hacked by the group. He is a Commissioner in the High Court of Jersey.
Gray was knighted by Queen Elizabeth II in December 1998.
He was portrayed by actor Alex Jennings in Denial, the 2016 film based on the Irving v. Penguin Books and Lipstadt case.