Old age is currently the greatest risk factor for developing dementia. Since older people make up a larger portion of the population than ever before, the resulting increase in the incidence of dementia presents a major challenge for society. Dementia is complex and multifaceted and impacts not only the person with the diagnosis but also those caring for them and society as a whole.  Human-Computer Interaction (HCI) design and development are pivotal in enabling people with dementia to live well and be supported in the communities around them. HCI is increasingly addressing the need for inclusivity and accessibility in the design and development of new technologies, interfaces, systems, services, and tools. Using interdisciplinary approaches HCI engages with the complexities and ‘messiness’ of real-world design spaces to provide novel perspectives and new ways of addressing the challenge of dementia and multi-stakeholder needs. HCI and Design in the Context of Dementia brings together the work of international experts, designers and researchers working across disciplines. It provides methodologies, methods and frameworks, approaches to participatory engagement and case studies showing how technology can impact the lives of people living with dementia and those around them. It includes examples of how to conduct dementia research and design in-context in the field of HCI, ethically and effectively and how these issues transcend the design space of dementia to inform HCI design and technology development more broadly. The book is valuable for and aimed at designers, researchers, scholars and caregivers that work with vulnerable groups like people with dementia, and those directly impacted.