This article explores the Japanese genetic origins, how they have changed over time, and how they continue to influence Japan today. It is believed that most modern-day Japanese people are descended from three main ancestral groups: Jomon (Ainu), Yayoi (Chinese/Korean), and Kofun (Japanese). Recent studies have revealed much about how genetics influences certain traits in modern day Japanese people such as facial features, hair color or eye color. Migration patterns throughout East Asia during ancient times played an important role shaping both current demographics within present day society as well influencing cultural practices found throughout various regions today. Foreign influences had a major impact on shaping both current demographics within present day society as well influencing cultural practices found throughout various regions today. All these factors combined make up what are considered to be true “Japanese genetic origins" providing valuable insight into the country's past, present, and future evolution moving forward.