William Scoresby Bay is a coastal embayment at the western side of William Scoresby Archipelago, Antarctica. It is 8 kilometres (5 mi) long and 5.6 kilometres (3.5 mi) wide, with shores marked by steep rock headlands and snow-free hills rising to 210 m. The practical limits of the bay are extended 6.4 kilometres (4 mi) northward from the coast by island groups located along its east and west margin.