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

Melbourne Oslo Ekurhuleni Rome Mexico City Austin New Orleans Berlin Durban (eThekwini) London Hangzhou Auckland Warsaw Buenos Aires Copenhagen Chennai Quezon City Houston Curitiba Qingdao Abidjan Medellín Jakarta Cape Town Beijing Karachi Guadalajara Singapore Wuhan Bogotá Amsterdam Kuala Lumpur Nanjing Melbourne Oslo Ekurhuleni Rome Mexico City Austin New Orleans Berlin Durban (eThekwini) London Hangzhou Auckland Warsaw Buenos Aires Copenhagen Chennai Quezon City Houston Curitiba Qingdao Abidjan Medellín Jakarta Cape Town Beijing Karachi Guadalajara Singapore Wuhan Bogotá Amsterdam Kuala Lumpur Nanjing

Hanoi Lagos Seoul Heidelberg Nairobi Dalian Hong Kong Shanghai New York City Los Angeles Santiago Chicago Dhaka (North & South) Tshwane Dakar Miami Quito Boston Portland Yokohama Phoenix Johannesburg Bengaluru Vancouver Dubai Fuzhou Lima Sydney Casablanca São Paulo Istanbul Amman Rotterdam Hanoi Lagos Seoul Heidelberg Nairobi Dalian Hong Kong Shanghai New York City Los Angeles Santiago Chicago Dhaka (North & South) Tshwane Dakar Miami Quito Boston Portland Yokohama Phoenix Johannesburg Bengaluru Vancouver Dubai Fuzhou Lima Sydney Casablanca São Paulo Istanbul Amman Rotterdam

Ahmedabad Freetown Washington, DC Seattle Salvador Barcelona Stockholm Shenzhen Philadelphia Toronto Addis Ababa Lisbon Tel Aviv – Yafo Bangkok Tokyo Delhi NCT San Francisco Fortaleza Dar es Salaam Ho Chi Minh City Guangzhou Milan Rio de Janeiro Montréal Zhenjiang Madrid Accra Chengdu Mumbai Paris Athens Ahmedabad Freetown Washington, DC Seattle Salvador Barcelona Stockholm Shenzhen Philadelphia Toronto Addis Ababa Lisbon Tel Aviv – Yafo Bangkok Tokyo Delhi NCT San Francisco Fortaleza Dar es Salaam Ho Chi Minh City Guangzhou Milan Rio de Janeiro Montréal Zhenjiang Madrid Accra Chengdu Mumbai Paris Athens