单线突唇鱼（学名：Labrichthys unilineatus）为辐鳍鱼纲鲈形目隆头鱼亚目隆头鱼科突唇鱼属的鱼类，俗名单线黑隆鱼。分布于印度太平洋区，从东非至密克罗尼西亚、美属萨摩亚海域，栖息深度0-20公尺，本鱼稚鱼身体褐色，有2条蓝白色的斑纹，侧面的斑纹随着体型增大而消失，母鱼土黄色，斑纹暗淡或模糊，雄鱼彩色更多增强了与明亮的超过雌性的颜色，一个大的黄色区域在胸鳍基部，体长可达17.5公分，栖息在珊瑚生长的潟湖或珊瑚礁区，以珊瑚虫为食，可做为食用鱼及观赏鱼。该物种的模式产地在关岛。

The tubelip wrasse (Labrichthys unilineatus) is a species of wrasse native to the Indian Ocean and the western Pacific Ocean. This species occurs in lagoons and on coral reefs at depths from 0 to 20 m (0 to 66 ft). This species grows to 17.5 cm (6.9 in) in total length. It is of minor importance to local commercial fisheries and can be found in the aquarium trade. This species is the only known member of its genus.