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

Mexico City Johannesburg Rome Santiago Seattle Hong Kong New York City Guangzhou Singapore Auckland Yokohama Salvador Washington, DC Toronto New Orleans Kolkata Bogotá Chicago Los Angeles Wuhan Austin Amman Paris Heidelberg Seoul Accra Zhenjiang Quito Tokyo Vancouver Hangzhou Istanbul Mexico City Johannesburg Rome Santiago Seattle Hong Kong New York City Guangzhou Singapore Auckland Yokohama Salvador Washington, DC Toronto New Orleans Kolkata Bogotá Chicago Los Angeles Wuhan Austin Amman Paris Heidelberg Seoul Accra Zhenjiang Quito Tokyo Vancouver Hangzhou Istanbul

Dar es Salaam Ekurhuleni Rio de Janeiro Ho Chi Minh City Stockholm Hanoi Fuzhou Berlin Amsterdam Beijing São Paulo Durban (eThekwini) Karachi Curitiba Guadalajara Houston Bengaluru Milan Warsaw Cape Town Dubai Shanghai Addis Ababa Barcelona Boston Nairobi Lisbon Portland Melbourne Rotterdam Chennai Miami Dar es Salaam Ekurhuleni Rio de Janeiro Ho Chi Minh City Stockholm Hanoi Fuzhou Berlin Amsterdam Beijing São Paulo Durban (eThekwini) Karachi Curitiba Guadalajara Houston Bengaluru Milan Warsaw Cape Town Dubai Shanghai Addis Ababa Barcelona Boston Nairobi Lisbon Portland Melbourne Rotterdam Chennai Miami

San Francisco Sydney Ahmedabad Philadelphia Montréal Bangkok London Abidjan Phoenix Delhi NCT Madrid Dhaka (North & South) Dakar Copenhagen Nanjing Tel Aviv – Yafo Chengdu Buenos Aires Freetown Jakarta Mumbai Kuala Lumpur Quezon City Lima Dalian Medellín Shenzhen Qingdao Athens Lagos Oslo Tshwane San Francisco Sydney Ahmedabad Philadelphia Montréal Bangkok London Abidjan Phoenix Delhi NCT Madrid Dhaka (North & South) Dakar Copenhagen Nanjing Tel Aviv – Yafo Chengdu Buenos Aires Freetown Jakarta Mumbai Kuala Lumpur Quezon City Lima Dalian Medellín Shenzhen Qingdao Athens Lagos Oslo Tshwane