This book constitutes the refereed proceedings of the IFIP International Conference on Network and Parallel Computing, NPC 2005, held in Beijing, China in November/December 2005.The 48 revised full papers and 20 revised short papers presented together with 3 invited papers were carefully selected from a total of 320 submissions. The papers are organized in topical sections on grid and system software, grid computing, peer-to-peer computing, web techniques, cluster computing, parallel programming and environment, network architecture, network security, network storage, multimedia service, and ubiquitous computing.