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

Hanoi Chennai Paris Mumbai Amman Bogotá Sydney Curitiba Portland Wuhan Salvador Istanbul Milan San Francisco Rotterdam Lagos Singapore Kuala Lumpur Vancouver Los Angeles Johannesburg Bengaluru Addis Ababa Cape Town Beijing Dhaka (North & South) Santiago Amsterdam Oslo Buenos Aires Chengdu Accra Hanoi Chennai Paris Mumbai Amman Bogotá Sydney Curitiba Portland Wuhan Salvador Istanbul Milan San Francisco Rotterdam Lagos Singapore Kuala Lumpur Vancouver Los Angeles Johannesburg Bengaluru Addis Ababa Cape Town Beijing Dhaka (North & South) Santiago Amsterdam Oslo Buenos Aires Chengdu Accra

Nanjing São Paulo Tokyo New Orleans Stockholm Hangzhou Ekurhuleni Dubai Seattle Zhenjiang Nairobi Heidelberg Miami Montréal Dalian Dar es Salaam Toronto Auckland Athens Hong Kong Qingdao Jakarta Abidjan Melbourne Rome Copenhagen Tel Aviv – Yafo London Delhi NCT Kolkata Lima Houston Nanjing São Paulo Tokyo New Orleans Stockholm Hangzhou Ekurhuleni Dubai Seattle Zhenjiang Nairobi Heidelberg Miami Montréal Dalian Dar es Salaam Toronto Auckland Athens Hong Kong Qingdao Jakarta Abidjan Melbourne Rome Copenhagen Tel Aviv – Yafo London Delhi NCT Kolkata Lima Houston

Fuzhou Shenzhen Seoul Warsaw Karachi Rio de Janeiro Ho Chi Minh City Chicago Madrid Freetown Dakar Ahmedabad Tshwane Boston New York City Washington, DC Durban (eThekwini) Guadalajara Quezon City Medellín Phoenix Berlin Quito Philadelphia Lisbon Shanghai Barcelona Guangzhou Yokohama Mexico City Bangkok Austin Fuzhou Shenzhen Seoul Warsaw Karachi Rio de Janeiro Ho Chi Minh City Chicago Madrid Freetown Dakar Ahmedabad Tshwane Boston New York City Washington, DC Durban (eThekwini) Guadalajara Quezon City Medellín Phoenix Berlin Quito Philadelphia Lisbon Shanghai Barcelona Guangzhou Yokohama Mexico City Bangkok Austin