This book constitutes the refereed proceedings of the First International Atlantic Web Intelligence Conference, AWIC 2003, held in Madrid, Spain in May 2003. The 32 revised full papers presented together with 3 invited papers were carefully reviewed and selected from 70 submissions. The papers are organized in topical sections on general issues in Web intelligence, Web security, semantic Web, Web authoring and design, Web information retrieval, agents for the Web, and user behavior.