Towada-Hachimantai National Park (十和田八幡平国立公園, Towada-Hachimantai Kokuritsu Kōen) is a national park comprising two separate areas of Aomori, Iwate, and Akita Prefectures, Japan. The Towada-Hakkōda area encompasses Lake Towada, Mount Hakkōda, and most of the Oirase River valley. The Hachimantai area includes Mount Hachimantai, Mount Iwate, Tamagawa Onsen, and Akita Komagatake (秋田駒ヶ岳).