Ian Duncan Burnett, Baron Burnett of Maldon, PC, DL (born 28 February 1958), is a British judge who served as Lord Chief Justice of England and Wales from 2017 to 2023.

He practised mainly in public and administrative law, acting on the inquiries into the 1987 Kings Cross fire, the convictions of the Guildford Four and Maguire Seven, the 1997 Southall and 1999 Ladbroke Grove rail crashes, and the inquests into the 1997 deaths of Diana, Princess of Wales, and Dodi Fayed.

He was appointed as a Judge of the High Court in 2008, assigned to the Queen's Bench Division.

[7][8] In November 2022, Burnett announced his intention to retire as Lord Chief Justice from 30 September 2023.

[9] He was succeeded by Baroness Carr of Walton-on-the-Hill as Lady Chief Justice.