Tondo is a cluster of organizations dedicated to the Circular Economy, working to create an ecosystem between universities, start-ups, companies, organizations and individuals, to foster innovation, entrepreneurship and circularity. The association Tondo APS carries out and supports analyses, studies, research and activities aimed at safeguarding and improving the conditions of the environment, following the principles of Circular Economy. Tondo LAB, on the other hand, is a company set up to support companies and start-ups in the conception and implementation of circular solutions, simplifying their path towards Circular Economy. In addition to this, there is also Re-think, an event format showcasing possible Circular Economy solutions, fostering interaction and discussion between national and international stakeholders. Tondo is enlarging and spreading the knowledge related to Circular Economy topics, supporting the launch of new businesses that implement a circular approach and help consolidated companies in the transition to a Circular Economy.