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

Beijing Nairobi Shanghai Bengaluru Rome Phoenix Wuhan Ho Chi Minh City Dalian Lima Guangzhou Seattle Washington, DC Miami Sydney Buenos Aires Tshwane Chennai Abidjan Lagos Copenhagen Kuala Lumpur Seoul Chengdu Rio de Janeiro Nanjing Dar es Salaam Ekurhuleni Tokyo Vancouver Warsaw Portland Istanbul Beijing Nairobi Shanghai Bengaluru Rome Phoenix Wuhan Ho Chi Minh City Dalian Lima Guangzhou Seattle Washington, DC Miami Sydney Buenos Aires Tshwane Chennai Abidjan Lagos Copenhagen Kuala Lumpur Seoul Chengdu Rio de Janeiro Nanjing Dar es Salaam Ekurhuleni Tokyo Vancouver Warsaw Portland Istanbul

New York City London Boston Johannesburg Durban (eThekwini) Dhaka (North & South) Austin Fuzhou Bogotá Karachi Addis Ababa Freetown Dubai Mumbai Berlin Quito Salvador Barcelona Medellín Jakarta Accra Bangkok Amman Curitiba Athens New Orleans São Paulo Hong Kong Shenzhen Hangzhou Oslo Amsterdam Casablanca New York City London Boston Johannesburg Durban (eThekwini) Dhaka (North & South) Austin Fuzhou Bogotá Karachi Addis Ababa Freetown Dubai Mumbai Berlin Quito Salvador Barcelona Medellín Jakarta Accra Bangkok Amman Curitiba Athens New Orleans São Paulo Hong Kong Shenzhen Hangzhou Oslo Amsterdam Casablanca

Mexico City Paris Toronto Zhenjiang Los Angeles Delhi NCT Auckland Melbourne Lisbon Stockholm Rotterdam Philadelphia Quezon City Cape Town Yokohama Qingdao Tel Aviv – Yafo Singapore Montréal Ahmedabad Hanoi Heidelberg Dakar Chicago Houston Fortaleza Madrid San Francisco Santiago Milan Guadalajara Mexico City Paris Toronto Zhenjiang Los Angeles Delhi NCT Auckland Melbourne Lisbon Stockholm Rotterdam Philadelphia Quezon City Cape Town Yokohama Qingdao Tel Aviv – Yafo Singapore Montréal Ahmedabad Hanoi Heidelberg Dakar Chicago Houston Fortaleza Madrid San Francisco Santiago Milan Guadalajara