This special issue of the Journal of Social Philosophy consists of a selection of articles on collective responsibility. In view of the theoretical and practical importance of the topic of collective responsibility, it is perhaps surprising that relatively little has so far been written and published on this theme. The editors believe that the present collection of essays is a very good addition to the literature in question. There is increasing interest in the topic of collective responsibility. Sixteen years ago, when a volume of essays was published on the last fifty years of articles on collective responsibility,1 there were barely enough good articles to fill a relatively slim volume. The current special issue is nearly as big as the 1991 volume, and the essays all came from the same three-day conference.