The Japanese beech (Fagus crenata) is a species of deciduous tree native to Japan. It is closely related to the European beech (Fagus sylvatica). The Japanese beech is a small to medium-sized tree, reaching a height of 10–20 m. The leaves are alternate, simple, and 6–12 cm long and 3–6 cm wide, with a serrated margin. The flowers are borne in clusters of 2-5 on the underside of the leaves. The fruit is a small nutlet that is enclosed in a three-lobed, spiny bract.
The Japanese beech typically blooms from April to May. The nuts ripen from September to October.
The Japanese beech is found in mixed forests of deciduous and coniferous trees. It prefers moist, well-drained soils.
The Japanese beech is an important tree in Japan, where it is used for timber and fuel. The nuts are edible and are sometimes used in baking.