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

Wuhan Qingdao Phoenix Ahmedabad Berlin Los Angeles Chicago São Paulo Abidjan Hanoi Montréal Yokohama Chennai Quezon City Lisbon Delhi NCT Mumbai Dalian Houston Rio de Janeiro Freetown Cape Town Curitiba Shenzhen Madrid Boston Quito Rotterdam Barcelona Oslo Accra Nanjing Athens Wuhan Qingdao Phoenix Ahmedabad Berlin Los Angeles Chicago São Paulo Abidjan Hanoi Montréal Yokohama Chennai Quezon City Lisbon Delhi NCT Mumbai Dalian Houston Rio de Janeiro Freetown Cape Town Curitiba Shenzhen Madrid Boston Quito Rotterdam Barcelona Oslo Accra Nanjing Athens

Addis Ababa Dubai Paris Casablanca Rome Milan Shanghai Karachi Toronto Dakar New York City Washington, DC New Orleans Austin Warsaw Medellín Jakarta Miami Dar es Salaam Stockholm Bangkok Bogotá Ho Chi Minh City Ekurhuleni Istanbul Sydney Dhaka (North & South) Durban (eThekwini) Buenos Aires Amsterdam Chengdu Heidelberg Auckland Addis Ababa Dubai Paris Casablanca Rome Milan Shanghai Karachi Toronto Dakar New York City Washington, DC New Orleans Austin Warsaw Medellín Jakarta Miami Dar es Salaam Stockholm Bangkok Bogotá Ho Chi Minh City Ekurhuleni Istanbul Sydney Dhaka (North & South) Durban (eThekwini) Buenos Aires Amsterdam Chengdu Heidelberg Auckland

Johannesburg Tshwane Copenhagen Nairobi Lagos Singapore Fuzhou Tel Aviv – Yafo Beijing Kuala Lumpur London Mexico City Melbourne Santiago Seattle Tokyo Fortaleza San Francisco Zhenjiang Salvador Portland Hangzhou Amman Lima Bengaluru Vancouver Hong Kong Philadelphia Guangzhou Guadalajara Seoul Johannesburg Tshwane Copenhagen Nairobi Lagos Singapore Fuzhou Tel Aviv – Yafo Beijing Kuala Lumpur London Mexico City Melbourne Santiago Seattle Tokyo Fortaleza San Francisco Zhenjiang Salvador Portland Hangzhou Amman Lima Bengaluru Vancouver Hong Kong Philadelphia Guangzhou Guadalajara Seoul