This book constitutes the refereed proceedings of the 22nd International Conference on Algorithms and Architectures for Parallel Processing, ICA3PP 2022, which was held in October 2022. Due to COVID-19 pandemic the conference was held virtually. The 33 full papers and 10 short papers, presented were carefully reviewed and selected from 91 submissions. The papers cover many dimensions of parallel algorithms and architectures, encompassing fundamental theoretical approaches, practical experimental projects, and commercial components and systems