This book collects a selection of papers presented at the 19th International Conference on Industrial Engineering and Industrial Management and XXIX Congreso de Ingeniería de Organización (CIO2025), that took place on 3 and 4 July 2025 in Seville. The conference was hosted by the Asociación para el Desarrollo de la Ingeniería de Organización (ADINGOR) and was organized by the Universidad de Sevilla, Spain.Some of the topics covered in the proceedings book include Supply Chain Management and Logistics; Operations Research, Modelling and Simulation; Industry 5.0 and Management Information Systems; Robotics and Control in Industrial Engineering; Project and Process Management; Education in Industrial Engineering; Circular Economy, among others.