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

Addis Ababa Athens Barcelona Accra Santiago Sydney Freetown Dubai São Paulo Phoenix Berlin Dar es Salaam Seattle Miami San Francisco Boston Durban (eThekwini) Nairobi Tokyo Yokohama Philadelphia Zhenjiang Singapore Lima Hong Kong Heidelberg Washington, DC Nanjing Curitiba Bengaluru Tel Aviv – Yafo Tshwane Addis Ababa Athens Barcelona Accra Santiago Sydney Freetown Dubai São Paulo Phoenix Berlin Dar es Salaam Seattle Miami San Francisco Boston Durban (eThekwini) Nairobi Tokyo Yokohama Philadelphia Zhenjiang Singapore Lima Hong Kong Heidelberg Washington, DC Nanjing Curitiba Bengaluru Tel Aviv – Yafo Tshwane

Medellín Quezon City New Orleans Copenhagen Warsaw Abidjan Dhaka (North & South) Bangkok Shenzhen Dalian Los Angeles Guangzhou Salvador Hangzhou Karachi Dakar Ekurhuleni Auckland Madrid Austin Johannesburg Guadalajara Milan Delhi NCT Rome Lisbon Beijing Mexico City Rio de Janeiro Ahmedabad London Amsterdam Medellín Quezon City New Orleans Copenhagen Warsaw Abidjan Dhaka (North & South) Bangkok Shenzhen Dalian Los Angeles Guangzhou Salvador Hangzhou Karachi Dakar Ekurhuleni Auckland Madrid Austin Johannesburg Guadalajara Milan Delhi NCT Rome Lisbon Beijing Mexico City Rio de Janeiro Ahmedabad London Amsterdam

Kuala Lumpur Bogotá Rotterdam Hanoi Wuhan Chengdu Melbourne Lagos Amman Oslo Paris Stockholm Cape Town Istanbul Qingdao Buenos Aires Houston Seoul Portland New York City Chicago Vancouver Montréal Ho Chi Minh City Fuzhou Jakarta Quito Toronto Mumbai Chennai Kolkata Shanghai Kuala Lumpur Bogotá Rotterdam Hanoi Wuhan Chengdu Melbourne Lagos Amman Oslo Paris Stockholm Cape Town Istanbul Qingdao Buenos Aires Houston Seoul Portland New York City Chicago Vancouver Montréal Ho Chi Minh City Fuzhou Jakarta Quito Toronto Mumbai Chennai Kolkata Shanghai