| Honorific Prefix: | Rear Admiral the Honourable Justice |
| Michael John Slattery | |
| Term End: | July 2021 |
| Term Start2: | 2010 |
| Term End2: | 2014 |
| Birth Place: | Sydney, New South Wales |
| Nationality: | Australian |
| Spouse: | Melissa |
| Allegiance: | Australia |
| Serviceyears: | 1990–present |
| Mawards: | Member of the Order of Australia |
Rear Admiral Michael John Slattery, (born 1954) is a Royal Australian Naval Reserve officer and lawyer. He has been a justice of the Supreme Court of New South Wales since 2009 and was the Judge Advocate General of the Australian Defence Force from July 2014[1] until July 2021.[2]
Slattery graduated from the University of Sydney with degrees in arts (1975) and law (1977). He became a barrister in 1978, Queen's Counsel in 1992 and justice of the Supreme Court of New South Wales in 2009. He joined the Royal Australian Navy Reserve as a Lieutenant in Supply Branch – Legal in 1990. He rose through the ranks and was appointed Judge Advocate General – Navy (as commodore) in 2010 and Judge Advocate General – ADF (as rear admiral) in 2014.[3]
Slattery has been appointed a Member of the Order of Australia (AM) twice: he was appointed in the Military Division in the 2019 Queen's Birthday Honours for "exceptional service to military law".[4] In the 2022 Australia Day Honours, Slattery was again appointed a Member, this time in the General Division, for "significant service to the law, to the judiciary, and to professional legal associations".[5]