Kōsaka is a Japanese surname that can be found in various regions of Japan. It is often associated with individuals and families who have made contributions in different fields, including arts, sports, and business. The name may also refer to specific locations or landmarks within Japan. In addition to being a surname, Kōsaka can refer to places, such as Kōsaka Town in Akita Prefecture. This town is known for its natural beauty and local culture, attracting visitors interested in exploring rural Japan. The name may also appear in popular culture, including anime and manga, where characters with the surname Kōsaka are featured.