This book constitutes the refereed proceedings of the 19th International Conference on Blended Learning, ICBL 2026, held in Beijing, China, during July 28-31, 2026.

The 36 full papers included in this book were carefully reviewed and selected from 116 submissions. They were organized in topical sections as follows: Keynotes; Collaborative Learning Innovations; Large Language Models in Education; Generative Artificial Intelligence in Education; AI-enhanced Teaching and Learning; Intelligent Educational Frameworks and Environments; Advanced Training and Curriculum Designs.