Japan's largest island is Honshu, which is the main island of Japan. It is located in the Pacific Ocean and is the seventh largest island in the world. Honshu is home to the majority of Japan's population and is the most populous island in the country. It is also the most industrialized and urbanized island in Japan. Honshu is home to many of Japan's major cities, including Tokyo, Osaka, and Kyoto. The island is also home to several mountain ranges, including the Japanese Alps and Mount Fuji.