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

Ho Chi Minh City Guadalajara Chengdu Amman Fuzhou Mumbai Cape Town Heidelberg Tshwane Montréal London Dalian Houston San Francisco Chicago Lisbon Delhi NCT Oslo Milan Lagos Johannesburg Seoul Toronto Austin Washington, DC New York City Hangzhou Salvador Rio de Janeiro Chennai São Paulo Dakar Ho Chi Minh City Guadalajara Chengdu Amman Fuzhou Mumbai Cape Town Heidelberg Tshwane Montréal London Dalian Houston San Francisco Chicago Lisbon Delhi NCT Oslo Milan Lagos Johannesburg Seoul Toronto Austin Washington, DC New York City Hangzhou Salvador Rio de Janeiro Chennai São Paulo Dakar

Yokohama Santiago Hong Kong Mexico City Madrid Durban (eThekwini) Ahmedabad Singapore Tokyo Stockholm Hanoi Paris Shanghai Istanbul Medellín Bangkok Kolkata Dhaka (North & South) Portland Vancouver Athens Beijing Philadelphia Quezon City Jakarta Zhenjiang Sydney Guangzhou Shenzhen Barcelona Berlin Abidjan Yokohama Santiago Hong Kong Mexico City Madrid Durban (eThekwini) Ahmedabad Singapore Tokyo Stockholm Hanoi Paris Shanghai Istanbul Medellín Bangkok Kolkata Dhaka (North & South) Portland Vancouver Athens Beijing Philadelphia Quezon City Jakarta Zhenjiang Sydney Guangzhou Shenzhen Barcelona Berlin Abidjan

Boston Buenos Aires Karachi New Orleans Accra Bogotá Quito Rome Warsaw Auckland Nanjing Lima Copenhagen Seattle Tel Aviv – Yafo Bengaluru Phoenix Addis Ababa Amsterdam Melbourne Rotterdam Qingdao Miami Nairobi Dubai Freetown Curitiba Los Angeles Dar es Salaam Kuala Lumpur Ekurhuleni Wuhan Boston Buenos Aires Karachi New Orleans Accra Bogotá Quito Rome Warsaw Auckland Nanjing Lima Copenhagen Seattle Tel Aviv – Yafo Bengaluru Phoenix Addis Ababa Amsterdam Melbourne Rotterdam Qingdao Miami Nairobi Dubai Freetown Curitiba Los Angeles Dar es Salaam Kuala Lumpur Ekurhuleni Wuhan