A new species of the deep-sea ceratioid anglerfish genus Himantolophus, long hidden within material identified as H. appelii Clarke, 1878, is described based on 43 female specimens collected in southern waters of all three major oceans of the world. A member of the H. appelii group, it differs from its sister-species, H. appelii, the only other member of the group, in details of escal morphology. The two species are geographically sympatric over much of their range.