Associate Professor Gillian Lamoury is a Senior Staff Specialist, Radiation Oncologist at Royal North Shore Hospital, a VMO at Mater, North Sydney, and regionally in Western NSW, with a subspecialty interest in the treatment of breast cancer.

Gillian is a Clinical Associate Professor at the University of Sydney. She is the Principal Investigator on several international, national, and investigator-led trials.

She is passionate about patient-centred, evidence-based care, including the delivery of high-quality treatments through advanced radiation therapy techniques for breast cancer.

Her philanthropic interests and passion for equitable access to high-quality cancer treatments led her to accept a Board position on the GenesisCare Foundation in 2020.

In 2025, she was appointed to the Board of Pratham Australia, a volunteer run, non-profit, charitable organisation whose vision is to end the cycle of poverty in India by providing access to education.

Gillian advocates for better patient care through her work with several important strategic groups. She was the inaugural Chair of the Breast Interest Group - Faculty of Radiation Oncology (BIG-FRO), which aims to promote best practice for breast cancer management, and to enhance the profile of radiation oncology for treating breast cancer. She is the recent past Chair of the Breast Cancer Advisory Group (Cancer Australia 2018 -2020) and is a member of the Clinical Advisory Group for Breast Cancer Network Australia (BCNA).