赤松（Pinus densiflora），是一种常绿针叶类乔木。可做薪柴用。

常绿乔木，高达30～40米，红褐色树皮较薄。一年生枝橙黄色，微被蜡粉。幼年发育均匀，树形整齐，老年则虬枝宛垂，渐呈不规则状，大枝平展，树冠伞形。叶2针一束，丛生短枝上，较马尾松针稍短稍硬，长5～12厘米。

3～4月间开花，雄球花圆柱形密集，雌球花单生。球果圆锥形状卵形，翌年10月成熟，淡褐黄色，鳞脐有短刺。种子具披针形长翅。

Pinus densiflora, the Japanese red pine, has a home range that includes Japan, the Korean Peninsula, northeastern China (Heilongjiang, Jilin, Liaoning, Shandong) and the extreme southeast of Russia (southern Primorsky Krai). This pine has become a popular ornamental and has several cultivars, but in the winter it becomes yellowish. The height of this tree is 20–35 m. The Japanese red pine prefers full sun on well-drained, slightly acidic soil.