This book constitutes the refereed proceedings of the 15th International Conference on Reversible Computation, RC 2023, held in Giessen, Germany, during July 18-19, 2023.

The 11 full papers and 3 short papers included in this book were carefully reviewed and selected from 19 submissions. They were organized in topical sections as follows: Foundations; Reversible Programming; Quantum Computing; and Quantum Circuits.