Extreme heat is an increasing climate risk for cities and the health of their residents across the world, due to the combination of the urban heat island (UHI) effect and climate change. Urban planning and design that considers urban heat mitigation can help cities increase their resilience to extreme heat in the built environment. This masterclass will present the current state and innovations in urban planning, design and governance for extreme heat, offer insight into the diverse disciplinary perspectives on extreme heat governance, and offer strategies for enhancing community engagement for sustained extreme heat planning efforts.