Cape Longing () is a rocky cape on the east coast of Graham Land, forming the south end of a large ice-covered promontory which marks the west side of the south entrance to Prince Gustav Channel. It was discovered by the Swedish Antarctic Expedition under Otto Nordenskiöld in 1902, and so named by him because from the position of his winter hut on Snow Hill Island the cape lay in the direction of his "land of longing" which he was anxious to explore.
Cape Longing is the tip of Longing Peninsula (), a peninsula 9 miles long, situated at the northeast end of Nordenskjold Coast where it separates the Larsen Ice Shelf from the Prince Gustav Ice Shelf. It was roughly charted by Nordenskiöld, and named after the cape by the UK Antarctic Place-Names Committee (UK-APC) following British Antarctic Survey (BAS) geological work in the area in 1987-88.
Longing Gap () is a constriction in the promontory north of Cape Longing, where the land narrows to 2 miles and forms a low isthmus. The gap is used to avoid the long detour around Cape Longing. It was mapped from surveys by Falkland Islands Dependencies Survey (FIDS) in 1960-61, and named by UK-APC.
This article incorporates public domain material from the United States Geological Survey document "Cape Longing" (content from the Geographic Names Information System).