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

Hanoi Ho Chi Minh City London Chengdu Shenzhen Qingdao Mumbai Buenos Aires Ekurhuleni Chennai Athens Oslo Accra Amsterdam New Orleans Medellín Toronto Istanbul Lagos Dakar Los Angeles Warsaw Rome Phoenix Santiago Quito Houston Miami Rotterdam Mexico City Johannesburg Austin Beijing Hanoi Ho Chi Minh City London Chengdu Shenzhen Qingdao Mumbai Buenos Aires Ekurhuleni Chennai Athens Oslo Accra Amsterdam New Orleans Medellín Toronto Istanbul Lagos Dakar Los Angeles Warsaw Rome Phoenix Santiago Quito Houston Miami Rotterdam Mexico City Johannesburg Austin Beijing

Bengaluru Curitiba Nanjing Freetown Dalian Philadelphia Shanghai Madrid Hong Kong Auckland Sydney Lima Delhi NCT Quezon City Ahmedabad Wuhan São Paulo Hangzhou Tokyo Bangkok Karachi Vancouver Stockholm Guadalajara Milan New York City Boston San Francisco Portland Fortaleza Heidelberg Dhaka (North & South) Seattle Bengaluru Curitiba Nanjing Freetown Dalian Philadelphia Shanghai Madrid Hong Kong Auckland Sydney Lima Delhi NCT Quezon City Ahmedabad Wuhan São Paulo Hangzhou Tokyo Bangkok Karachi Vancouver Stockholm Guadalajara Milan New York City Boston San Francisco Portland Fortaleza Heidelberg Dhaka (North & South) Seattle

Jakarta Tshwane Copenhagen Dubai Montréal Rio de Janeiro Nairobi Melbourne Durban (eThekwini) Zhenjiang Guangzhou Lisbon Yokohama Seoul Washington, DC Abidjan Barcelona Tel Aviv – Yafo Kuala Lumpur Dar es Salaam Salvador Bogotá Addis Ababa Casablanca Berlin Paris Fuzhou Cape Town Amman Singapore Chicago Jakarta Tshwane Copenhagen Dubai Montréal Rio de Janeiro Nairobi Melbourne Durban (eThekwini) Zhenjiang Guangzhou Lisbon Yokohama Seoul Washington, DC Abidjan Barcelona Tel Aviv – Yafo Kuala Lumpur Dar es Salaam Salvador Bogotá Addis Ababa Casablanca Berlin Paris Fuzhou Cape Town Amman Singapore Chicago