C40 is a global network of mayors of the world’s leading cities that are united in action to confront the climate crisis.

Abidjan Heidelberg Rio de Janeiro Lagos Mexico City Houston Ho Chi Minh City Delhi NCT Istanbul Rotterdam Mumbai Milan Hong Kong Paris Hangzhou Hanoi Fortaleza Quito Phoenix Philadelphia Dubai Oslo Warsaw Lisbon Shanghai Bangkok Kuala Lumpur Buenos Aires Washington, DC São Paulo Vancouver Bengaluru Tel Aviv – Yafo Abidjan Heidelberg Rio de Janeiro Lagos Mexico City Houston Ho Chi Minh City Delhi NCT Istanbul Rotterdam Mumbai Milan Hong Kong Paris Hangzhou Hanoi Fortaleza Quito Phoenix Philadelphia Dubai Oslo Warsaw Lisbon Shanghai Bangkok Kuala Lumpur Buenos Aires Washington, DC São Paulo Vancouver Bengaluru Tel Aviv – Yafo

Medellín Dalian Guadalajara Boston Dar es Salaam Portland Casablanca Dhaka (North & South) Austin Fuzhou Quezon City Sydney Chicago Berlin Montréal Qingdao Durban (eThekwini) Cape Town Yokohama Singapore Nairobi Melbourne Beijing Addis Ababa Auckland Rome Madrid Lima Bogotá Seattle Chennai Wuhan San Francisco Medellín Dalian Guadalajara Boston Dar es Salaam Portland Casablanca Dhaka (North & South) Austin Fuzhou Quezon City Sydney Chicago Berlin Montréal Qingdao Durban (eThekwini) Cape Town Yokohama Singapore Nairobi Melbourne Beijing Addis Ababa Auckland Rome Madrid Lima Bogotá Seattle Chennai Wuhan San Francisco

Freetown Nanjing Chengdu Miami Athens Stockholm Toronto Ahmedabad Ekurhuleni Accra Santiago New Orleans Copenhagen Barcelona Amman Dakar Johannesburg Zhenjiang London Guangzhou Tokyo Salvador Curitiba New York City Amsterdam Jakarta Tshwane Seoul Los Angeles Shenzhen Karachi Freetown Nanjing Chengdu Miami Athens Stockholm Toronto Ahmedabad Ekurhuleni Accra Santiago New Orleans Copenhagen Barcelona Amman Dakar Johannesburg Zhenjiang London Guangzhou Tokyo Salvador Curitiba New York City Amsterdam Jakarta Tshwane Seoul Los Angeles Shenzhen Karachi