This book constitutes the refereed proceedings of the 17th International Symposium on Algorithms and Computation, ISAAC 2006, held in Kolkata, India in December 2006.

The 73 revised full papers presented were carefully reviewed and selected from 255 submissions. The papers are organized in topical sections on algorithms and data structures, online algorithms, approximation algorithm, graphs, computational geometry, computational complexity, network, optimization and biology, combinatorial optimization and quantum computing, as well as distributed computing and cryptography.