This book constitutes the refereed proceedings of the 31st Argentine Congress of Computer Science on Computer Science - CACIC 2025, held in Viedma, Argentina, during October 6–10, 2025.

The 26 full papers included in this book were carefully reviewed and selected from 164 submissions. They were organized in topical sections as follows: Agents and Systems; Distributed and Parallel Processing; Technology Applied to Education; Graphic Computation, Images and Visualization; Databases and Data Mining; Software Engineering; Innovation in Software Systems; Signal Processing and Real-Time Systems; Innovation in Computer Science Education; Computer Security; Digital Governance and Smart Cities.