The Organization of World Heritage Cities (OWHC) is an international, non-profit organization founded in 1993 and based in Quebec City, Canada. Comprising mayors from cities with UNESCO World Heritage sites, OWHC serves as a collaborative platform focused on addressing the challenges faced by these historic urban areas, particularly in light of climate, economic, and social pressures.

Through its comprehensive 2022-2024 Action Plan, OWHC emphasizes the value of urban heritage in promoting sustainable development and aims to foster dialogue and exchange among member cities. Upcoming initiatives, such as the "New Urban Project," are designed to equip cities with innovative urban strategies that enhance livability, inclusivity, and resilience.

By engaging local stakeholders and encouraging grassroots actions, the OWHC supports its members in navigating modern challenges while preserving their unique historical identities. With a focus on promoting shared experiences and creating effective partnerships, the OWHC is dedicated to bolstering the political and scientific capacities of its network, ensuring that heritage cities are well-prepared for future development.