This book constitutes the proceedings of the 15th International Workshop on Open MP, IWOMP 2019, held in Auckland, New Zealand, in September 2019.The 22 full papers presented in this volume were carefully reviewed and selected for inclusion in this book. The papers are organized in topical sections named: best paper; tools, accelerators, compilation, extensions, tasking, and using OpenMP. | OpenMP by Xing Fan, Paperback | Indigo Chapters