| Honorific-Prefix: | The Honourable Justice |
| Jayne Margaret Jagot | |
| Office: | Justice of the High Court of Australia |
| Term Start: | 17 October 2022 |
| Appointer: | David Hurley |
| Nominator: | Anthony Albanese |
| Predecessor: | Patrick Keane |
| Office2: | Judge of the Federal Court of Australia |
| Term Start2: | 3 September 2008 |
| Term End2: | 16 October 2022 |
| Office3: | Judge of the Land and Environment Court (NSW) |
| Term Start3: | 2006 |
| Term End3: | 2 September 2008 |
| Occupation: | Judge, Lawyer |
| Education: | Baulkham Hills High School Macquarie University University of Sydney |
| Birth Date: | 19 June 1965 |
| Spouse: | Peter McClellan |
| Nationality: | Australian |
Jayne Margaret Jagot is a justice of the High Court of Australia, the highest court in the Australian judicial system. She was appointed to the High Court in October 2022. Jagot was previously a judge of the Federal Court of Australia. Before that, she served as a judge of the Land and Environment Court of New South Wales and a partner at the law firm Mallesons Stephen Jaques.
Jagot was born in England, and migrated to Australia with her family in 1968. Jagot studied at Baulkham Hills High School before receiving an arts degree from Macquarie University in 1987. She subsequently received a law degree with first-class honours from the University of Sydney in 1991. At her Federal Court swearing in ceremony, it was remarked that during her time there "she appears to have won every available prize in law".[1] She had won the Butterworths Prize for Most Proficient in First Year, the Pitt Cobbett Prize for Administrative Law, the Sir Alexander Beattie Prize in Company Law, the Margaret Ethel Peden Prize in Real Property, the Minter Ellison Prize in Intellectual Property, and the Nancy Gordon Smith Prize for Honours.[2] [3]
Jagot worked as a solicitor with Mallesons Stephen Jaques (now King & Wood Mallesons) from 1992 to 2002, specialising in planning and environmental law.[4] She was promoted to partner in 1997. She was admitted to the bar in 2002, after which she developed a successful practice as a barrister.
Jagot was appointed as a Judge of the Land and Environment Court of New South Wales in 2006. She also served as an acting judge of the Equity Division of the Supreme Court of New South Wales for a period.[5]
Jagot was appointed as a Judge of the Federal Court of Australia on 3 September 2008.[6] [7]
On 17 October 2022, Jagot was sworn in as a Justice of the High Court of Australia, replacing the retiring Justice Patrick Keane. On Jagot's appointment, the High Court of Australia had a majority of female Justices for the first time in its history.[8]
Jagot is married to former New South Wales Supreme Court judge and royal commissioner Peter McClellan.[9]