This book constitutes the proceedings of the 23rd International Conference on Computer Information Systems and Industrial Management, CISIM 2024, held in Bialystok, Poland, during September 27-29, 2024.The 31 full papers presented were carefully reviewed and selected from 47 submissions. These papers focus on biometrics and pattern recognition applications; computer information systems and security; industrial management and other applications; machine learning and artificial neural networks; modelling and optimization.