Denise Kouri, Kouri Research Commissioned by the Wellesley Institute Health disparities are a topic of increasing importance in Canada. In the last two years, they have been the focus of national and international reports analyzing and documenting the problems and proposing strategies for addressing them. This report examines the strategic and operational response of leading regional health authorities (RHAs) across the country to the problem of reducing health disparities. RHA efforts to reduce health disparities are important. Although comprehensive national and provincial strategies are also needed, activities at the regional and local level to plan and implement relevant programs, and to collaborate and coordinate with others are key. RHAs have considerable levers and powers and the extent to which they prioritize and act upon equity could potentially make a significant difference. This paper was commissioned by the Wellesley Institute as part of its Health Equity Roadmap project, wanting to build on lessons learned from the work of RHAs outside Ontario in addressing health disparities.