CCRI Knowledge Hub aims at increasing the impact of the existing Circular Cities and Regions Initiative (CCRI) by enlarging the network of involved stakeholders, bringing together the knowledge and critical mass already developed around Circular Economy implementation and building upon the CE stakeholder platform. The goal is to promote and make the circular economy concept a reality in EU cities and regions, in particular in those in the early stage of circular economy transition. To reach its objective, CCRI Knowledge Hub will leverage existing initiatives and projects to foster the adoption of circular economy in EU cities and regions. CCRI Knowledge Hub´s formula is based on three principles: (a) easy access to systematized workable knowledge; (b) tailored mentoring according to users’ needs and (c) effective awareness-raising to make the circular economy more desirable, that build upon four main dimensions: (i) Public engagement; (ii) Innovation and technology; (iii) Business models and financial support; and (iv) Impact evaluation. CCRI Knowledge Hub gathers a multidisciplinary expert consortium of 11 partners from 6 EU countries (research and technological centres, universities, research organizations, international networks and associations, regional authorities as well as specialized companies and SMEs) that bring in complementary skills and competences to achieve the project´s objectives.