Joann Wilkie is the Under Treasurer for the Department of Treasury and Finance, and Chair of Western Australian Treasury Corporation. She commenced in these roles on 4 August 2025.
Joann joined from NSW Treasury, where she served as Deputy Secretary of the Economic Strategy and Productivity Group since February 2019, as well as a Director with the NSW TCorp. Joann brings over 20 years of experience in the Australian Public Service, including senior roles in agricultural, energy and gender policy, and regulatory reform across several government departments. Joann holds a Bachelor of Economics (Honours) from the University of Sydney, a Master of Cultural Policy from the Graduate Institute of Policy Studies, Tokyo, and a Master of Public Policy from the Australian National University.
Joann was awarded the Public Service Medal and recognised in the Australia Day 2026 Honours List for outstanding public service to fiscal management in New South Wales during the COVID-19 pandemic.
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