Become an ICLEI member and join a global network of cities ambitious about and committed to sustainability in Europe and around the world.

ICLEI supports its members to find sustainable solutions by creating a movement of peers driving positive change on a European and global scale through projects, initiatives, and programmes. We offer cities a platform to engage with peers, alongside resources and tools to instigate positive environmental, economic, and social change. ICLEI also champions the role of local governments on the European and international policy stage, providing them with a clear voice and ensuring that their views are heard. We work closely together with European networks, the European Commission, the Committee of the Regions and many other organisations advancing sustainability.

By drawing on ICLEI's expertise and knowledge in a broad range of thematic areas, cities transform the sustainable future that they have imagined into a reality in the present.

Benefits of joining ICLEI

What ICLEI members say

Just as each of ICLEI's members has a unique profile, each of them has also benefited from membership in different ways. To see the list of ICLEI's current members worldwide, click here.

Barcelona, Spain

“By joining ICLEI, we’ve become part of a diverse community all working towards the same goal – better, more sustainable urban areas.

Open discussion on the challenges and lessons learned has played a significant role in shaping our sustainability policies and the confidence to be more ambitious.”

Janet Sanz,

Deputy Mayor for Ecology, Urban Planning and Mobility, Barcelona, Spain

The ICLEI offer

There are two main ways to become part of ICLEI, either as a member or through an associate partnership. Application forms are available below. Simply print the form and return it by either fax or post or send the document by e-mail to

The Membership Leaflet

Find out about becoming an ICLEI Member or Associate Partner:



Membership in ICLEI is offered to local governments and associations of local governments. Members elect the ICLEI Executive Committee and ensure the organisation is governed by way of representative democracy. Read about ICLEI's governance structure here .

Application forms are available here:

EN        ES        DE        FR

Associate Partnership

Associate Partnership is offered to state and national government agencies and their departments, non-profit and non-governmental organisations, and universities. Associate Partners receive information, all of ICLEI's publications, and special invitations and rates for ICLEI events and programmes.

Application form is available here.

ICLEI members also benefit from reduced fees for ICLEI's Procura+ network. The Procura+ Network represents more than 40 European public authorities that connect, exchange and act on sustainable and innovation procurement. To Learn more about the Procura+ Network, click here.

Interested in Membership?

Do you have questions about ICLEI membership or need some more information?
Leave us your contact details below and we’ll send you some tailored information to help you make a decision!

Thematic areas in which your city has an especially strong interest: