Company innovation strategies have recently been characterized by a trend towards more collaboration, through the sharing of ideas, knowledge, and expertise across firms’ or industries’ boundaries. Innovation clusters are considered as privileged places for collaborative innovation to develop. A recent stream of literature highlights the key role of cluster governance in facilitating and promoting these collaborative dynamics. However, little is known about the practices of cluster governance for managing knowledge at the cluster level although it is considered as a key determinant of cluster’s competitiveness. In this research, we study the knowledge brokering practices of cluster governance in three French innovation clusters, Advancity, Axelera and Imaginove. The three clusters are a top-down national initiative to foster regional competitiveness. We propose a comparative qualitative approach based on the analysis of 34 semi-structured, face-to-face interviews with strategic and operational members of the cluster governance. Very few researches have so far investigated the concrete practices of knowledge management at the cluster level, and fewer have attempted to highlight the role of cluster governance as a knowledge broker and the impact of these brokering practices on collaborative innovation at the cluster level. We hope to contribute to the recent stream of the Knowledge-based-View of Cluster as well as the cluster governance. The outcomes of this comparative research on knowledge brokering activities within French clusters induce the elaboration of practical knowledge management tools to create specific value at the territorial and cluster level. In particular we point out how these brokering activities focused on knowledge management help to reinforce the integration of SMEs in collaborative innovation dynamics within the cluster.