This book constitutes the refereed proceedings of the 9th International Conference on Parallel Computing Technologies, PaCT 2007, held in Pereslavl-Zalessky, Russia in September 2007 - in conjunction with the the Russian-Taiwan symposium on Methods and Tools of Parallel Programming of Multicomputers.

The 37 revised full papers and 24 revised poster papers presented together with 2 invited paper were carefully reviewed and selected from 98 submissions. The papers are organized in topical sections on models and languages, applications, techniques for parallel programming supporting, cellular automata, as well as methods and tools of parallel programming of multicomputers.