Our Cities
Around the world, C40 mayors and the cities they lead are taking ambitious, collaborative and urgent climate action that aligns with science-backed targets. They work together across borders in order to protect people and communities everywhere, and build a more sustainable, resilient and equitable future.
Ahmedabad, India
- Population
- 7.5 million
- Commissioner
- Banchhanidhi Pani
- Member since
- 2022
Rotterdam, The Netherlands
- Population
- 660,258
- Mayor
- Carola Schouten
- Member since
- 2007
Bengaluru, India
- Population
- 12.4 million
- Commissioner
- Maheshwar Rao
- Member since
- 2015
Dhaka (North & South), Bangladesh
- Population
- 22.5 million
- Dhaka North: Administrator Md. Azaz
- Dhaka South: Administrator Mr. Md. Shahjahan Mia
- Member since
- 2006
Mumbai, India
- Population
- 13.5 million
- Commissioner
- Bhushan Gagrani
- Member since
- 2007
Ekurhuleni, South Africa
- Population
- 3.9 million
- Executive Mayor
- Nkosindiphile Xhakaza
- Member since
- 2020
Phoenix, United States
Steering Committee
- Population
- 1.7 million
- Mayor
- Kate Gallego
- Member since
- 2020
Freetown, Sierra Leone
Steering Committee
- Population
- 1.3 million
- Mayor
- Yvonne Aki-Sawyerr
- Member since
- 2019
Abidjan, Côte d’Ivoire
Steering Committee
- Population
- 6 million
- Minister-Governor
- Ibrahima Cissé Bacongo
- Member since
- 2018
Guadalajara, Mexico
- Population
- 5.3 million
- Mayor
- Verónica Delgadillo
- Member since
- 2018
Medellín, Colombia
Steering Committee
- Population
- 2.6 million
- Mayor
- Federico Gutiérrez
- Member since
- 2016
Montréal, Canada
Steering Committee
- Population
- 2.1 million
- Mayor
- Valérie Plante
- Member since
- 2016
Kuala Lumpur, Malaysia
- Population
- 1.8 million
- Mayor
- Fadlun Mak Ujud
- Member since
- 2016
Chennai, India
- Population
- 8.3 million
- Municipal Commissioner
- J. Kumaragurubaran
- Member since
- 2016
Accra, Ghana
- Population
- 2.3 million
- Mayor
- Michael Kpakpo Allotey
- Member since
- 2015
Dubai, United Arab Emirates
- Population
- 3.4 million
- Director-General
- Ahmed Mohammed bin Thani
- Member since
- 2015
Quezon City, The Philippines
- Population
- 3.2 million
- Mayor
- Josefina "Joy" Belmonte
- Member since
- 2015
Durban (eThekwini), South Africa
- Population
- 4.1 million
- Executive Mayor
- Cyril Xaba
- Member since
- 2015
Nairobi, Kenya
Steering Committee
- Population
- 5 million
- Governor
- Sakaja Johnson
- Member since
- 2014
Dar es Salaam, Tanzania
- Population
- 6.9 million
- Lord Mayor
- Omary S. Kumbilamoto
- Member since
- 2014
Cape Town, South Africa
- Population
- 4.8 million
- Mayor
- Geordin Hill-Lewis
- Member since
- 2014
Singapore, Singapore
- Population
- 5.6 million
- Permanent Secretary
- Loh Ngai Seng
- Member since
- 2012
Washington, DC, United States
- Population
- 693,819
- Mayor
- Muriel Bowser
- Member since
- 2012
Oslo, Norway
Steering Committee
- Population
- 716,438
- Governing Mayor
- Eirik Lae Solberg
- Member since
- 2012
Santiago, Chile
- Population
- 8.4 million
- Governor
- Claudio Benjamin Orrego
- Member since
- 2009
Rio de Janeiro, Brazil
Steering Committee
- Population
- 6.8 million
- Mayor
- Eduardo Paes
- Member since
- 2007
New York City, United States
- Population
- 8.8 million
- Mayor
- Eric Adams
- Member since
- 2005
New Orleans, United States
- Population
- 392,133
- Mayor
- LaToya Cantrell
- Member since
- 2006
Milan, Italy
Steering Committee
- Population
- 1.4 million
- Mayor
- Giuseppe Sala
- Member since
- 2009
Madrid, Spain
- Population
- 3.4 million
- Mayor
- José Luis Martínez-Almeida
- Member since
- 2005
Los Angeles, United States
- Population
- 3.8 million
- Los Angeles
- Karen Bass
- Member since
- 2006
Lagos, Nigeria
- Population
- 23.8 million
- Governor
- Babajide Olusola Sanwo-Olu
- Member since
- 2007
Jakarta, Indonesia
- Population
- 10.8 million
- Governor
- Pramono Anung
- Member since
- 2006
Ho Chi Minh City, Vietnam
- Population
- 9.6 million
- Chairman
- Van Duoc Nguyen
- Member since
- 2009
Delhi NCT, India
- Population
- 22.5 million
- Chief Minister
- Rekha Gupta
- Member since
- 2007
Buenos Aires, Argentina
- Population
- 3.1 million
- Mayor
- Jorge Macri
- Member since
- 2006
Bangkok, Thailand
- Population
- 5.7 million
- Governor
- Chadchart Sittipunt
- Member since
- 2006
Addis Ababa, Ethiopia
- Population
- 5.4 million
- Mayor
- Adanech Abiebie
- Member since
- 2007
Tokyo, Japan
Steering Committee
- Population
- 14.1 million
- Governor
- Yuriko Koike
- Member since
- 2006
Seoul, Republic of Korea
Steering Committee
- Population
- 9.8 million
- Mayor
- Oh Se-hoon
- Member since
- 2006
San Francisco, United States
- Population
- 874,519
- Mayor
- Daniel Lurie
- Member since
- 2005
Philadelphia, United States
- Population
- 1.6 million
- Mayor
- Cherelle Parker
- Member since
- 2005
Paris, France
Steering Committee
- Population
- 2.2 million
- Mayor
- Anne Hidalgo
- Member since
- 2005
Melbourne, Australia
- Population
- 184,307
- Lord Mayor
- Nicholas Reece
- Member since
- 2005
London, United Kingdom
Steering Committee
- Population
- 9.2 million
- Mayor
- Sadiq Khan
- Member since
- 2005
Johannesburg, South Africa
- Population
- 6.1 million
- Mayor
- Dada Morero
- Member since
- 2006
Houston, United States
- Population
- 2.4 million
- Mayor
- John Whitmire
- Member since
- 2006
Hong Kong, China
Steering Committee
- Population
- 7.4 million
- Secretary for Environment and Ecology
- Tse Chin-wan
- Member since
- 2007
Heidelberg, Germany
- Population
- 161,163
- Lord Mayor
- Dr. Eckart Würzner
- Member since
- 2006
Chicago, United States
- Population
- 2.7 million
- Mayor
- Brandon Johnson
- Member since
- 2005
Bogotá, Colombia
- Population
- 7.5 million
- Mayor
- Carlos Fernando Galán
- Member since
- 2006
Amsterdam, The Netherlands
- Population
- 892,189
- Mayor
- Femke Halsema
- Member since
- 2007
Berlin, Germany
- Population
- 3.7 million
- Governing Mayor
- Kai Wegner
- Member since
- 2005
- Steering Committee Member