Lucinda Mary Turnbull AO (née Hughes; born 30 March 1958) is an Australian businesswoman, philanthropist, and former local government politician.

She has since held positions on a number of urban planning bodies, including as chief commissioner of the Greater Sydney Commission from 2015 to 2020.

[5] Turnbull also holds a Master of Business Administration from the Australian Graduate School of Management of the University of New South Wales.

In September 2017, Turnbull received an honorary Doctorate of Letters for her substantial and sustained service and contribution to the University and to the Greater Western Sydney region.

[8][9] Turnbull was subsequently appointed as one of three Commissioners assigned with the responsibility of establishing a new governance structure for the merged council entity.

[10] As Lord Mayor, Turnbull awarded Nobel Peace Prize laureate Aung San Suu Kyi the keys to the city of Sydney in 2003.

[14] Turnbull has a long-standing interest in cities and their planning, governance and management, as well as the importance of technological innovation to the national economy.

On 26 January 2011, Turnbull was appointed an Officer of the Order of Australia (AO) for her distinguished service to the community, particularly through philanthropic contributions to, and fundraising support for, a range of medical, social welfare, educational, youth and cultural organisations, to local government, and to business.

In 2015 she was appointed Chief Commissioner of the Greater Sydney Commission,[20][21] a role she fulfilled until March 2020 when she resigned to work with her husband in their family business.

He had two stints as the party's leader, and in that capacity, in his second term served as the 29th Prime Minister of Australia, in the Turnbull government.