The Organization of World Heritage Cities (OWHC) works and shares complementary objectives with the following international entities:

Partners

• City of Québec
• Europa Nostra 
• Gouvernement du Québec: ministère des relations internationales et de la francophonie [French]
• Institut du patrimoine culturel de l’Université Laval (IPAC) [French]

Collaborations

• Climate Heritage Network
• Council of Europe
• Cultural Heritage Finance Alliance
• Eurocities
• International Committee on Historic Cities, Towns and Villages (CIVVIH-ICOMOS) 
• Organisation for Economic Co-operation and Development (OCDE)
• Our World Heritage
• URBACT
• World Heritage Center of UNESCO (WHC)

Exchanges

• Arab Towns Organization (FAO) [Arab]
• Cities Alliance
• Getty Conservation Institute (GCI)
• Global Philadelphia
• International Centre for the Study of the Preservation and Restoration of Cultural Property (ICCROM)
• International Council on Monuments and Sites (ICOMOS)
• National Association of Mexican World Heritage Cities  (ANCMPM)
• World Tourism Organization (UN Tourism)
• UNESCO chair in Urban Landscape, Faculté de l’aménagement de l’Université de Montréal
• United Cities and Local Governments (UCLG)
• United Nations Office for Project Services (UNOPS)
• World Monuments Fund (WMF)