Baltic DB&IS 2026 proceedings on Information systems, Artificial intelligence, Machine learning, Data management systems, Human computer interaction.This book constitutes the refereed proceedings of the 17th International Baltic Conference, DB&IS 2026, Tartu, Estonia, June 28–July 1, 2026.The 20 revised full papers were carefully reviewed and selected from 52 submissions. The papers are centered around topics like Foundations, Methods, and Systems Engineering,Applications of Intelligent Systems,Human-Centric Intelligent Systems,Socio-Technical Systems,Data Science and Analytics in Education and Digitalization and Intelligent Systems for Organisations.