细叶香桂（学名：Cinnamomum subavenium），又称香桂，属樟科，为常绿乔木，高达20米，胸径达50厘米；树皮灰色，片状剥落。叶互生或近对生；叶片椭圆形，卵状披针形，长3.5－13厘米，宽2－6厘米；叶全缘，三出脉明显。圆锥花序腋生，花淡黄色，长3－4毫米；花被片近椭圆形，长3毫米。果椭圆形，长7毫米，径5毫米，熟时蓝黑色。树皮含芳香油，作食品加工调料。

Cinnamomum subavenium is an evergreen tree from South and East Asia that can become 20 m (66 ft) tall.

Leaves of Cinnamomum subavenium are an important spice. It is also a Chinese herb that has been suggested for use as a skin whitening agent. The plant contains substances which inhibit production of tyrosinase an enzyme which catalyzes the production of melanin. The herb has not been established as either effective or safe but is being researched by Hui-Min Wang and his colleagues at Kaohsiung Medical University in Taiwan where experiments shown that it was effective at causing zebrafish to lose their stripes.