角鲨目是板鳃类鱼的一目，是一类没有臀鳍，有两个背鳍的鲨鱼的总称。吻不呈板状，无须，也不生侧齿。此类鲨鱼多为栖息在深海的小型鲨鱼。

角鲨目下分为7科，如下：

• 笠鳞鲛科(Echinorhinidae)
• 棘鲛科(Squalidae)
• 尖鳍鲛科(Centrophoridae)
• 灯笼棘鲛科(Etmopteridae)
• 梦棘鲛科(Somniosidae)
• 粗皮棘鲛科(Oxynotidae)
• 黑棘鲛科(Dalatiidae)

Squaliformes is an order of sharks that includes about 126 species in seven families.

Members of the order have two dorsal fins, which usually possess spines, no anal fin or nictitating membrane, and five gill slits. In most other respects, however, they are quite variable in form and size. They are found worldwide, from polar to tropical waters, and from shallow coastal seas to the open ocean.