铠鲨（学名：Dalatias licha），又称黑鲛，为软骨鱼纲角鲨目铠鲨科的一种。

本鱼分布于西大西洋: 从新英格兰格鲁吉亚浅滩至墨西哥湾北部。东大西洋: 包括冰岛、苏格兰与爱尔兰的大西洋斜坡到摩洛哥、地中海西部、马德拉群岛到喀麦隆。西印度洋:从莫桑比克至南非]]。西太平洋:从日本、**、中国至澳洲与新西兰。中太平洋:夏威夷群岛等海域。该物种的模式产地在法国。

The kitefin shark or seal shark (Dalatias licha) is a species of dogfish shark in the family Dalatiidae, and the only species in its genus. It is found sporadically around the world, usually close to the sea floor at depths of 200–600 m (660–1,970 ft). With a sizable oil-filled liver to maintain neutral buoyancy, this shark is able to cruise slowly through the water while expending little energy. The kitefin shark has a slender body with a very short, blunt snout, large eyes, and thick lips. Its teeth are highly differentiated between the upper and lower jaws, with the upper teeth small and narrow and the lower teeth large, triangular, and serrated. Its typical length is 1.0–1.4 m (3.3–4.6 ft).