The ACM Hypertext conference is a premium venue for high quality peer-reviewed research on hypertext theory, systems, applications, publishing, artwork and related practices. It is concerned with all aspects of modern hypertext research including social and intelligent media, narrative systems and applications, authoring, reading and publishing hypertext, workflows and infrastructures as well as reflections and approaches. The topic of the Hypertext 2023 is the “Humanity Within”. This is an invitation to the historical Hypertext community to reflect on the human-side of hypertext systems, as new forms of cultural artifacts and infrastructures. This is also a call to arms for the communities of Digital Humanities, Book History, and E-Literature to apply their Humanities-based lenses, sensibilities, and methods to the study of hypertext systems and social media.