Magnolia obovata (common names Japanese Bigleaf Magnolia and Japanese whitebark magnolia) is a species of Magnolia, native to Japan and the adjacent Kurile Islands of Russia. It grows at altitudes of sea level up to 1,800 m in mixed broadleaf forest.
It is a medium-sized deciduous tree 15-30 m tall, with slate grey bark. The leaves are large, 16-38 cm (rarely to 50 cm) long and 9-20 cm (rarely 25 cm) broad, leathery, green above, silvery or greyish pubescent below, and with an acute apex. They are held in whorls of five to eight at the end of each shoot. The flowers are also large, cup-shaped, 15-20 cm diameter, with 9-12 creamy, fleshy tepals, red stamens; they have a strong scent, and are produced in early summer after the leaves expand. The fruit is an oblong-cylindric aggregate of follicles 12-20 cm long and 6 cm broad, bright pinkish red, each follicle containing one or two black seeds with a fleshy orange-red coating.