黑软颌鱼（学名：Malacosteus niger）为软颌鱼科软颌鱼属的鱼类。分布于大西洋、印度洋和太平洋的温暖深海区域等。该物种的模式产地在大西洋42°N，50°W。

维基物种中的分类信息：

黑软颌鱼

Malacosteus niger is a species of fish in the family Stomiidae, the barbeled dragonfishes. It is known by the common names northern stoplight loosejaw, lightless loosejaw, black loosejaw, and black hinged-head. It lives in oceans around the world from tropical to subarctic waters.