The Urban Health Equity Assessment and Response Tool (Urban HEART) is a user-friendly guide for policy- and decision-makers at national and local levels to: identify and analyse inequities in health between people living in various parts of cities, or belonging to different socioeconomic groups within and across cities; facilitate decisions on viable and effective strategies, interventions and actions that should be used to reduce inter- and intra-city health inequities. Also available in French and Spanish: https://apps.who.int/iris/handle/10665/79060