白眉长臂猿（学名：Hoolock），是长臂猿科下的一属。

白眉长臂猿是体型仅次于合趾猿的长臂猿，成年白眉长臂猿的体长可达90厘米，体重6-9公斤。雄性和雌性的体型差别不大，但雄性的体毛为黑色，眉毛为白色，而雌性的体毛为灰褐色，胸部和颈部的颜色较深。

The hoolock gibbons are two primate species of genus Hoolock in the gibbon family, Hylobatidae, native to eastern Bangladesh, Northeast India and Southwest China.

Hoolocks are the second-largest of the gibbons, after the siamang. They reach a size of 60 to 90 cm and weigh 6 to 9 kg. The sexes are about the same size, but they differ considerably in coloration: males are black-colored with remarkable white brows, while females have a grey-brown fur, which is darker at the chest and neck. White rings around their eyes and mouths give their faces a mask-like appearance.