This book constitutes the refereed proceedings of the 13th International Conference on Advanced Information Systems Engineering, CAiSE 2001, held in Interlaken, Switzerland in June 2001. The 27 revised full papers presented together with three invited papers, three experience reports, and a panel summary were carefully reviewed and selected from a total of 97 submissions. The papers are organized in topical sections on requirements engineering, agent-based approaches, workflow managment, data models and design, reuse and method engineering, XML and information systems integration, evolution, and conceptual modeling.