Māori 5-year survival rates in advanced breast cancer are reported to be less than half compared with non-Māori due to institutional racism. According to expert opinion, this inequity is related to inadequate screening and risk assessment, lack of support navigating the healthcare system, poor access to treatment and delays in treatment. In a call to action, the authors recommended prioritising breast cancer screening and risk assessment for Māori women, providing Māori advocates for patient navigation, addressing treatment delays and increasing treatment funding. Moreover, they suggested health providers be held accountable for ethnic inequities. To improve breast cancer outcomes for Māori women, they recommended Māori involvement in all aspects of the breast cancer continuum from policy making to sector design, implementation and evaluation.