This book contains the papers presented at VisSym '03, the fifth joint Visulaization Symposium organized by the Eurographics Association and the IEEE Computer Society Technical Committee on Visualization and Graphics (TCVG), which took place from May 26 - 28, 2003, in Grenoble, France. There were 62 papers submitted from 11 countries. Each submission was anonymously reviewed by at least three members of the International Program Committee. The decision of which papers to accept was difficult due to the high quality of submissions. This year, 30 papers were accepted for publication.