Purpose South Korea, Japan, and Thailand have a high proportion of older adults. The growing age could lead to the risk of dementia and to date, the prevalence of dementia in these countries is continuing to rise. To support dementia care, assistive technology (AT) is growing interest and has become one of the fundamental pillars of healthcare. Technology could improve quality of life among people with dementia and caregivers. AT are demonstrated the advantage when used for rehabilitation and psychosocial interventions. However, healthcare policies related to AT in each country are different. For this reason, this study aims to summarize and compare the assistive technology available for older adults with dementia in each country. Method A systematic literature search was performed using the Scopus, PubMed and additional search was done through domestic databases, for instance, J-Stage, KCI, and TCI databases. Search terms include ("assistive technology" OR "assistive device") AND ("dementia" OR "Alzheimer") AND ("care" OR "rehabilitation"). The inclusion criteria were article published in a peer-reviewed journal within 20 years, described as a research article, and discussed on the high-tech assistive technology being used in each country's context, the assistive technology is mainly for dementia care and not medical device. After assessing eligibility, then 10 studies were included in this review. The analysis was done based on Arksey and O'malley's framework. Results and discussion The search identified 203 articles, 10 of which were reviewed and met the inclusion criteria. Among the 10 articles included in this study, 6 were from Japan, 3 were from South Korea, and 1 was from Thailand. Subjects were people with mild dementia to severe dementia. Types of AT were social robots; for example,