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

Freetown London Toronto Curitiba Quezon City Zhenjiang Nanjing Yokohama Accra New York City Washington, DC Wuhan Johannesburg Athens Ekurhuleni Philadelphia Heidelberg New Orleans Cape Town Dubai Delhi NCT Boston Rio de Janeiro Santiago Amman Dar es Salaam Berlin Dakar Tshwane Seattle Seoul Abidjan San Francisco Freetown London Toronto Curitiba Quezon City Zhenjiang Nanjing Yokohama Accra New York City Washington, DC Wuhan Johannesburg Athens Ekurhuleni Philadelphia Heidelberg New Orleans Cape Town Dubai Delhi NCT Boston Rio de Janeiro Santiago Amman Dar es Salaam Berlin Dakar Tshwane Seattle Seoul Abidjan San Francisco

Hong Kong Istanbul Fortaleza Dhaka (North & South) Fuzhou Mexico City Lisbon Auckland Jakarta Rotterdam Phoenix Barcelona Bogotá Vancouver Melbourne Quito Hanoi Guangzhou Copenhagen Buenos Aires Chengdu Casablanca Shenzhen Houston Amsterdam Portland Paris Madrid Los Angeles Chennai Karachi Miami Qingdao Hong Kong Istanbul Fortaleza Dhaka (North & South) Fuzhou Mexico City Lisbon Auckland Jakarta Rotterdam Phoenix Barcelona Bogotá Vancouver Melbourne Quito Hanoi Guangzhou Copenhagen Buenos Aires Chengdu Casablanca Shenzhen Houston Amsterdam Portland Paris Madrid Los Angeles Chennai Karachi Miami Qingdao

Dalian Warsaw Austin Hangzhou Chicago Sydney Ahmedabad Beijing Singapore Nairobi Tel Aviv – Yafo Mumbai Ho Chi Minh City Salvador Bangkok Rome Durban (eThekwini) Guadalajara Oslo Addis Ababa Lima Shanghai Tokyo Kuala Lumpur Medellín Montréal Stockholm Bengaluru Lagos Milan São Paulo Dalian Warsaw Austin Hangzhou Chicago Sydney Ahmedabad Beijing Singapore Nairobi Tel Aviv – Yafo Mumbai Ho Chi Minh City Salvador Bangkok Rome Durban (eThekwini) Guadalajara Oslo Addis Ababa Lima Shanghai Tokyo Kuala Lumpur Medellín Montréal Stockholm Bengaluru Lagos Milan São Paulo