威廉斯科斯比湾是南极洲的海湾，位于威廉斯科斯比群岛西面，长5英里、宽3.5英里，最高点海拔高度210米，该海湾在1936年2月被英国探险队发现。

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. Discovered in February 1936 by Discovery Investigations personnel on the RSS William Scoresby, for which the bay was named.