This book constitutes the proceedings of the 7th International Conference on Web Information Systems Engineering, WISE 2006, held in Wuhan, China in October 2006. The 37 revised full papers and 17 revised short papers presented together with 3 the abstracts of invited lectures were carefully reviewed and selected from 183 submissions. The papers are organized in topical sections on Web search, Web retrieval, Web workflows, Web services, Web mining, performant Web systems, Web information Systems, Web document analysis, quality, security and trust, semantic Web and integration, XML query processing, multimedia and user interface.