This book constitutes the refereed proceedings of the 17th International Colloquium on Structural Information and Communication Complexity, SIROCCO 2010, held in Sirince, Turkey, in June 2010. The 19 revised full papers presented were carefully reviewed and selected from 37 submissions. The volume also contains the abstract of one invited talk. The papers are organized in topical section on game theory, network algorithms, motion planning, asynchrony, network algorithms, motion planning, topology algorithms, and graph algorithms.