The 13th International Conference on Learning and Collaboration Technologies, LCT 2026, held as part of the 28th International Conference on Human-Computer Interaction, HCI International 2026 (HCII 2026), took place in Montreal, QC, Canada, during July 2026.A total of 7435 individuals from academia, research institutes, industry, and government agencies from 94 countries submitted contributions to HCII 2026. Following peer review, 1463 papers and 360 posters (as short research papers) are included in the volumes of the HCII 2026 proceedings published just before the start of the conference.Three volumes (LNCS 16731, 16732, and 16733) of the HCII 2026 proceedings are dedicated to this year’s edition of the LCT Affiliated Conference focusing on topics related to:Design, Usability, and Emerging Technologies in Collaborative Learning Ecosystems; Design and Evaluation for Domain-Specific Learning and Healthcare; Immersive, XR, and Embodied Learning Environments; Learning Analytics, Self-Regulated Learning, and Learner Monitoring; Collaborative Learning, Online Communities, and Belonging; Digital Equity, Cultural Reflection, and Inclusive Learning Design; Pedagogical Frameworks and Evaluative Metrics in Educational Technology;Generative AI in Writing and Learning; AI-Supported Teaching, Assessment, and Educator Tools; Game-Based, Playful, and creative Learning; and Chatbots, AI-supported Teaching, and Adaptive Support Systems.
