Rising greenhouse gas emissions have significantly altered the composition of the atmosphere, exacerbating global climate disruptions. The Gulf Cooperation Council (GCC), composed of six nations rich in resources, holds a pivotal position in the global economy, prompting an examination of how Environmental, Social, and Governance (ESG) initiatives can enhance urban sustainability in the region. Methodologically, this study synthesizes existing literature on the impact of ESG on urban sustainability, employing a mixed-methods approach that integrates comparative analysis of major GCC capital market contributors with insights from published sustainability guidelines and reports, as well as findings from seven focus groups. The research investigates the underexplored role of ESG integration in promoting sustainable urban development within the GCC. It identifies various barriers to ESG adoption in the region, including cultural factors, regulatory gaps, and limitations in data availability. Despite global efforts, the GCC faces distinctive challenges, such as climate change impacts and economic reliance on hydrocarbons. Key findings reveal that ESG integration can incentivize sustainable practices among corporations, attract responsible investments, and enhance economic resilience. However, challenges persist due to cultural factors, regulatory gaps, and insufficient stakeholder knowledge. The study proposes strategies to address these challenges, emphasizing the improvement of sustainability reporting across both private and public sectors, the promotion of standardized ESG metrics, and the effective use of technology for robust data management. By overcoming these hurdles, the transformative potential of ESG in GCC urban sustainability initiatives can be maximized. This research offers crucial insights for stakeholders, policymakers, and urban planners navigating the evolving landscape of ESG integration and urban sustainability in the GCC and beyond.