长吻银鲛科（学名：Rhinochimaeridae），又名长鼻银鲛科，是全头亚纲银鲛目的其中一科。

长吻银鲛科下分3个属，如下：

The Rhinochimaeridae, commonly known as long-nosed chimaeras, are a family of cartilaginous fish. They are similar in form and habits to other chimaeras, but have an exceptionally long conical or paddle-shaped snout. The snout has numerous sensory nerve endings, and is used to find food such as small fish. The first dorsal fin includes a mildly venomous spine, used in defense.