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

Guangzhou Kuala Lumpur Athens New York City Phoenix Washington, DC Tshwane Lima Addis Ababa Los Angeles Chengdu San Francisco São Paulo Nairobi Istanbul Portland Durban (eThekwini) Hangzhou Ekurhuleni Bogotá Rio de Janeiro Rome Accra Paris Rotterdam Houston Delhi NCT Melbourne Guadalajara Hong Kong Quito Qingdao Guangzhou Kuala Lumpur Athens New York City Phoenix Washington, DC Tshwane Lima Addis Ababa Los Angeles Chengdu San Francisco São Paulo Nairobi Istanbul Portland Durban (eThekwini) Hangzhou Ekurhuleni Bogotá Rio de Janeiro Rome Accra Paris Rotterdam Houston Delhi NCT Melbourne Guadalajara Hong Kong Quito Qingdao

Karachi Amman Dar es Salaam Abidjan Sydney Tel Aviv – Yafo Barcelona Mumbai Ahmedabad Fuzhou Jakarta Auckland Warsaw Lisbon Miami Montréal Austin Chicago Oslo Toronto Dhaka (North & South) Bengaluru Ho Chi Minh City Singapore Milan Hanoi Zhenjiang Bangkok Dubai Johannesburg Dalian Lagos Karachi Amman Dar es Salaam Abidjan Sydney Tel Aviv – Yafo Barcelona Mumbai Ahmedabad Fuzhou Jakarta Auckland Warsaw Lisbon Miami Montréal Austin Chicago Oslo Toronto Dhaka (North & South) Bengaluru Ho Chi Minh City Singapore Milan Hanoi Zhenjiang Bangkok Dubai Johannesburg Dalian Lagos

Dakar Shanghai Nanjing Seoul London Yokohama Cape Town Freetown Quezon City Beijing Medellín Mexico City Heidelberg Tokyo Copenhagen Shenzhen Buenos Aires Vancouver Santiago Chennai Stockholm Seattle Amsterdam Philadelphia Kolkata Berlin Wuhan New Orleans Boston Madrid Salvador Curitiba Dakar Shanghai Nanjing Seoul London Yokohama Cape Town Freetown Quezon City Beijing Medellín Mexico City Heidelberg Tokyo Copenhagen Shenzhen Buenos Aires Vancouver Santiago Chennai Stockholm Seattle Amsterdam Philadelphia Kolkata Berlin Wuhan New Orleans Boston Madrid Salvador Curitiba