The two-volume set LNCS 16866 + 16867 constitutes the proceedings of 20th International Conference on Computers Helping People with Special Needs, ICCHP 2026, Brno, Czech Republic, during July 15–17, 2026.The 123 full papers included in the proceedings were carefully reviewed and selected from 244 submissions. They were organized in topical sections as follows: Part I: Accessibility for the Deaf and Hard Of Hearing; Accessible and Inclusive Digital Publishing; AI-Enhanced Immersive Media Environments: User-Centred Design and Participatory Practices; Art Karshmer Lectures in Access to Mathematics, Science and Statictics; Assistive Technologies and Inclusion for Older People; Assistive Technology and Accessibility for Dyslexia and Neurodiversity; GenAI for Cognitive Accessibility: Plain Language and Inclusive User Interaction; The Impact of Cognitive Accessibility on Mental Health; Augmentative and Alternative Communication Innovations in Products and Services; Blindness, Low Vision: New Approaches to Artwork Perception and ICT Mediation; Part II: Design for Accessible/Inclusive Sports and Rehabilitation with Assistive Technologies; ICT to Support Inclusive Education – Universal Learning Design (ULD); New Methods for Creating Accessible Material in Higher Education; Inclusive and Intelligent Digital Healthcare; Indoor and Outdoor Navigation for Disabled People: Challenges and Opportunities; Innovation, Accessibility, and Artificial Intelligence: Towards an Inclusive Technological Future; Interacting with Data for Understanding and Analysis of Complex Information; Interaction Techniques for Motor Disabled Users; Tactile Graphics and 3D Models for Blind People and Shape Recognition by Touch; Digital Accessibility – From Inclusive Design and UX to Implementation and Evaluation.
