This book constitutes the proceedings of the 23rd International Conference on Parallel and Distributed Computing, Applications, and Technologies, PDCAT 2022, which took place in Sendai, Japan, during December 7-9, 2022.The 24 full papers and 16 short papers included in this volume were carefully reviewed and selected from 95 submissions. The papers are categorized into the following topical Heterogeneous System (1; HPC and u0026 AI; Embedded systems and u0026 Communication; Blockchain; Deep Learning; Quantum Computing and u0026 Programming Language; Best Papers; Heterogeneous System (2); Equivalence Checking and u0026 Model checking; Interconnect; Optimization (1); Optimization (2); Privacy; and Workflow.