A workshop on <i>Metadata Management in Grid and Peer-to-Peer Systems</i> was held in the Senate House of the University of London on December 16 2003.<sup>1</sup> The workshop was organised by the <i>SeLeNe</i> (Self e-Learning Networks) IST project as part of its dissemination activities.<sup>2</sup> The goal of the workshop was to identify recent technological achievements and open challenges regarding metadata management in novel applications requiring peer-to-peer information management in a distributed or Grid setting. The target audience for this event were researchers from the Grid, peer-to-peer and e-learning communities, as well as other application areas requiring Grid and/or peer-to-peer support. The event attracted 43 participants from 8 different European countries, and we believe that it was an important step in coordinating research activities in these inter-related areas. The presentations at the workshop fell into one of four sessions, each of which we report on below.