This three-volume set LNCS 14696-14698 constitutes the refereed proceedings of the 18th International Conference on Universal Access in Human-Computer Interaction, UAHCI 2024, held as part of the 26th International Conference, HCI International 2024, in Washington, DC, USA, during June 29 – July 4, 2024.

The total of 1271 papers and 309 posters included in the HCII 2024 proceedings was carefully reviewed and selected from 5108 submissions.

The UAHCI 2024 proceedings were organized in the following topical sections:

Part I: User Experience Design and Evaluation for Universal Access; AI for Universal Access.

Part II: Universal Access to Digital Services; Design for Cognitive Disabilities; Universal Access to Virtual and Augmented Reality.

Part III: Universal Access to Learning and Education; Universal Access to Health and Wellbeing; Universal Access to Information and Media.