This text constitutes the refereed proceedings of the 7th International Conference on Cooperative Information Systems, CoopIS 2000, held in Eilat, Israel in September 2000. The 24 revised full papers and six short papers presented were carefully reviewed and selected from a total of 74 submissions. The papers are organized in topical sections on workflow modelling, information retrieval, co-operative databases, information services, workflow execution, CSCW and organizational aspects.