The CC program committee is pleased to present this volume with the proceedings of the 13th International Conference on Compiler Construction (CC 2004). CC continues to provide an exciting forum for researchers, educators, and practitioners to exchange ideas on the latest developments in compiler te- nology, programming language implementation, and language design. The coference emphasizes practical and experimental work and invites contributions on methods and tools for all aspects of compiler technology and all language paradigms. This volume serves as the permanent record of the 19 papers accepted for presentation at CC 2004 held in Barcelona, Spain, during April 1–2, 2004. The 19 papers in this volume were selected from 58 submissions. Each paper was assigned to three committee members for review. The program committee met for one day in December 2003 to discuss the papers and the reviews. By the end of the meeting, a consensus emerged to accept the 19 papers presented in this volume. However, there were many other quality submissions that could not be accommodated in the program; hopefully they will be published elsewhere. The continued success of the CC conference series would not be possible wi- out the help of the CC community. I would like to gratefully acknowledge and thank all of the authors who submitted papers and the many external reviewers who wrote reviews.