this book constitutes the refereed proceedings of the 4th ifip international working conference, kmgov 2003, held in rhodes, greece in may 2003. the 32 revised full papers presented were carefully reviewed and selected for presentation. the papers are organized in topical sections on km concepts for inter-organization cooperation, requirements for km systems in government, improving government activity through km, representing governmental knowledge, innovative technologies to support km, km tools for public administration, approaching km solutions, examples of km in public administration.