This article explores the history, benefits, challenges, types of tests available and popularity of Ancestry DNA testing in Japan. It also provides an expert opinion on the usefulness of these tests for those interested in exploring their family history or discovering more about their ethnic origins. The language barrier and limited geographic regions tested by some companies are two of the challenges associated with using this technology in Japan. Despite these challenges, it is expected that the number of people taking advantage of Ancestry DNA services will continue to grow as they become more affordable and accessible to all types of customers in Japan.