Sustainable urban planningSustainable urban planning and environmental managementEnvironmental management are critical to addressing the growing challenges of rapid urbanizationUrbanization, climate changeClimate change, and resource depletionResource depletion. This chapter examines the principles, strategies, and innovationsInnovation in sustainability necessary for fostering resilient and livable cities while ensuring ecological integrityEcological integrity and social equitySocial equity in urban planning. Key principles such as smart growthSmart growth, mixed-use developmentMixed-use development, and green space preservation are examined for their role in promoting sustainable urban environments. Integrating advanced technologies and renewable energyRenewable energy systems is highlighted as pivotal in optimizing resource use and enhancing urban resilienceUrban resilience. Furthermore, the chapter emphasizes the importance of participatory approaches, stakeholder engagementStakeholder engagement, and inclusive governance to alignIntegrated urban development urban development with community needs and sustainabilitySustainability goals. It delves into environmental managementEnvironmental management strategies, focusing on pollution controlPollution control, resource efficiencyResource efficiency, and ecosystem serviceEcosystem services integration to mitigate urban ecological challenges. Case studiesCase studies in sustainability of successful urban sustainabilityUrban sustainability initiatives—such as Copenhagen’s carbon-neutral infrastructure, Singapore’s “Garden City” approach, and Curitiba’s (Brazil) innovative transport systems—demonstrate the transformative potential of localized solutions and adaptive policies. However, economic constraintsEconomic constraints, social inequitiesEnvironmental inequities, and technological barriers underscore the need for interdisciplinary and collaborative frameworks. By synthesizing global best practices, the research outlines a roadmap for achieving sustainable urban futures through the interplay of technology, policy, and community-driven approaches. It concludes with recommendations for policymakers, urban planners, and researchers to advance sustainable urban planningSustainable urban planning and environmental managementEnvironmental management in the face of unprecedentedSmart urbanization urbanizationUrbanization and ecological pressures.