丹参（学名：Salvia miltiorrhiza）是唇形科鼠尾草属植物，其根是一种中药。

多年生草本，有丹红色肥大的根，俗称“红根”，茎高40～80厘米，多分枝，被长柔毛。叶常为奇数羽状复叶，顶端小叶较大，小叶卵形或椭圆状卵形，先端钝，边缘具圆锯齿，两面被柔毛，下面较密。轮状聚伞花序成顶生或腋生，组成假总状花序，密被腺毛及长柔毛；小苞片披针形；花萼钟状，先端二唇形，萼筒喉部密被白色柔毛；花冠蓝紫色，二唇形，花冠筒外伸，弯曲，筒内有毛环。椭圆形小坚果，花期5～8月，果期8～9月。

Salvia miltiorrhiza (simplified Chinese:丹参; traditional Chinese:丹參; pinyin:dānshēn), also known as red sage, Chinese sage, tan shen, or danshen, is a perennial plant in the genus Salvia, highly valued for its roots in traditional Chinese medicine. Native to China and Japan, it grows at 90 to 1,200 m (300 to 3,940 ft) elevation, preferring grassy places in forests, hillsides, and along stream banks. The specific epithet miltiorrhiza means "red ochre root".