Southtrap Rock (62°59′S 56°38′W / 62.983°S 56.633°W / -62.983; -56.633) is an isolated rock lying west of Cape Juncal, D'Urville Island, in the Joinville Island group. In association with Northern Rocks, so named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1963 because the rock is the southernmost of two groups of features which should be avoided by vessels entering Antarctic Sound from the north.

 This article incorporates public domain material from "Southtrap Rock". Geographic Names Information System. United States Geological Survey.