Accelerate your city’s transition to a circular, low-carbon, and sustainable future. The Asian Circular Cities Declaration supports local governments across Asia in driving urban transformation through circular economy solutions and resilient development.
This publication showcases 12 practical case studies demonstrating how cities can manage water resources circularly and strengthen urban infrastructure against climate and disaster risks, including a rainwater harvesting initiative from Sumida City, an ICLEI Japan member, offering lessons for cities worldwide.
Town Hall COPs in Tokyo and Tottori bring local voices into national and global climate discussions, showcasing bold, locally led climate action from Japan to the world.
The Daring Cities 2025 Report captures how local, regional, and national leaders came together through the Bonn Dialogues and Virtual Forum to bridge policy and implementation, advance initiatives such as CHAMP and Town Hall COPs, and place cities at the heart of climate governance.
From 10 to 21 November 2025, COP30 will take place in Belém, Federative Republic of Brazil. During the conference, the Cities & Regions Hub will serve as a global stage for mayors, regional leaders, and diverse partners to advance ambitious and actionable climate solutions for a sustainable future.
The Power of Our Network in a Changing World - ICLEI’s strategic vision for the next three years - sets a way towards the transformation to sustainable development.
Since 1993, ICLEI Japan has been connecting member local governments in Japan with ICLEI’s international network. Today we have 27 active members who are leading the local government sustainability actions in Japan.
ICLEI – Local Governments for Sustainability (also known as ICLEI) is a global network that works with more than 2,500 local and regional governments, committed to sustainable urban development.
Active in over 125 countries, we influence sustainability policy and drive local action for zero-emission, nature-based, equitable, resilient, and circular development. Our Members and team of experts work together through peer exchange, partnerships, and capacity building to create systemic change for urban sustainability.
In 2025, ICLEI marks the 35th Anniversary of its establishment!
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Founded in 1993, ICLEI Japan is the country office of ICLEI – Local Governments for Sustainability, dedicated to connecting and empowering local governments across Japan.
We help member cities drive impactful local sustainability initiatives while fostering global collaboration with other ICLEI offices and partner organizations, advancing both regional and international climate and sustainability goals.
Cities, towns and regions
Countries worldwide
% Global urban population
% Global population
Tokorozawa City is located in southwestern Saitama Prefecture, about 30 kilometers from central Tokyo. With a population of over 340,000, it is a core residential city in the Tokyo metropolitan area that balances urban convenience with rich natural environments such as the Sayama Hills.
Tokorozawa is historically known as the birthplace of Japanese aviation and has developed as a city with strong cultural and environmental awareness. In recent years, it has actively promoted sustainability and climate action, declaring itself a Zero Carbon City and advancing initiatives toward a decarbonized, environmentally friendly future.
Associate Partnership is available to non-governmental organizations, universities, state and national government agencies and not-for-profit research institutions. The purpose of Associate Partnership is to facilitate dialogues between local governments and these partners, to provide knowledge transfer in line with ICLEI’s Mission and Charter, and an avenue for which partners can support ICLEI’s work and mandate.
HARNESS the power of the ICLEI Network!" Governments need to give (the sense of) direction, as Business leaders we don't make the wind, we sail the boats. So policy should set the winds in the right directions if you want the boat going fast to the right harbor."Philippe Joubert Senior Advisor, World Business Council
on Sustainable Development
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Rates and Dues
Application Form
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Joining ICLEI means connecting to more than 2,500 local and regional governments as well as technical experts and a diversity community of partners worldwide. ICLEI Members actively engage with their peers through conferences, workshops, webinars and online platforms and take advantage of our connections with businesses, financial institutions and other implementation partners that help strengthen innovation and resourcing.
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Got any questions? I will be happy to assist. Please contact me at iclei(at)iclei.org
Fee Structure
Benefits
Got any questions? I will be happy to assist. Please contact me at iclei(at)iclei.org
