C40 Cities

The C40 Cities Climate Leadership Group (C40) is a global network of nearly 100 cities committed to addressing climate change through collaborative action. Founded in 2005, C40 supports cities in implementing sustainable initiatives to reduce greenhouse gas emissions and enhance urban resilience.

📍 Headquarters & Regional Offices

• London, UK (Registered Charity Office)

  • Address: First Floor, 44 Featherstone Street, London EC1Y 8RN

  • Phone: +44 20 3525 1919

  • Email: legal@c40.org

  • Website: www.c40.org/c40-uk New York, USA (Global Headquarters)

  • Address: 120 Park Avenue, 23rd Floor, New York, NY 10017

• Rio de Janeiro, Brazil (Regional Office)

  • Address: R. São Clemente, 360 – Morro Santa Marta, Botafogo, 22260-000, Rio de Janeiro, RJ

📬 Contact Information

• Media Enquiries: media@c40.org

• Legal Matters: legal@c40.org

• Privacy Concerns: privacy@c40.org

• Cities Finance Facility (CFF):

  • Email: contact@c40cff.org

  • Address: 3 Queen Victoria Street, London, EC4N 4TQ, United Kingdom

• Clean Construction E-learning Course:

  • Contact: Ismat Fathi at ifathi@c40.org

• United Nations Climate Change Conferences (COP) Engagement:

  • Contact: Agathe Cavicchioli at acaviccioli@c40.org