This book constitutes the refereed proceedings of the 11th Balkan Conference in Informatics on Advances in ICT Research in the Balkans, BCI 2025, held in Tirana, Albania, during October 13–15, 2025. The 38 full papers included in this book were carefully reviewed and selected from 54 submissions. They were organized in topical sections as follows: Cloud, Agents and Data Management; Programming and Software; Microservices; Large Language Models; Natural Language Processing and Recommender Systems; Internet of Things; Machine Learning; and Educational Issues.