About Mark Muller

Mark Muller is a Partner in the Assurance & Advisory division at HLB Mann Judd in Sydney, Australia, with more than three decades of experience in audit and corporate advisory.

Alongside his role at HLB Mann Judd, Mark serves as Chair of the HLB Australasian Association and is a member of the HLB International Executive Committee, where he contributes to the strategic direction and development of the global network.

Mark brings extensive technical expertise and commercial insight to complex financial and operational matters. His approach combines strong business acumen with collaborative leadership, enabling him to build trusted stakeholder relationships and deliver practical, forward-thinking outcomes. He maintains a strong focus on technical excellence and quality, helping organisations navigate evolving regulatory and business environments while meeting the highest standards of compliance.

Through his leadership roles across HLB, Mark also plays an important part in strengthening collaboration and alignment between member firms in Australasia and across the international network.