Map of the regions and prefectures of Japan in <a href="https://en.wikipedia.org/wiki/ISO_3166-2:JP" class="extiw" title="wikipedia:ISO 3166-2:JP">ISO 3166-2:JP</a> order.
<a href="//commons.wikimedia.org/wiki/User:TheOtherJesse" title="User:TheOtherJesse">TheOtherJesse</a>
Vectorized from <a href="//commons.wikimedia.org/wiki/File:Regions_and_Prefectures_of_Japan.png" title="File:Regions and Prefectures of Japan.png">Image:Regions and Prefectures of Japan.png</a>.