"I'm extremely honoured to be appointed and to have the opportunity to contribute to the court's work," Black said.
Black has experience in complex commercial and corporate litigation and has acted on numerous regulatory enquiries. He is an Adjunct Professor in the Faculty of Law at the University of Sydney and a Visiting Fellow in the Faculty of Law at the University of New South Wales.
Robert Milliner, chief executive of Mallesons said the firm was delighted with the appointment.
"[We] wish him every success in his role as a justice of the Supreme Court.
"Mallesons has a history of producing outstanding talent and Ashley's appointment follows earlier appointments of Mallesons partners to the judiciary and in senior regulatory roles".
Former Mallesons alumni appearing on leading Australian courts include NSW Supreme Court Judge Julie Ward, NSW Supreme Court Judge Reg Barrett, NSW Supreme Court Judge Richard White, Vic Supreme Court Judge Emilios Kyrou, Federal Court of Australia Judge Jayne Jagot and WA District Court Judge Christopher Stevenson.