凯西湾是南极洲的海湾，位于恩德比地宇航员海沿岸，长68公里、宽58公里，该海湾在1956年被澳洲探险队发现，该半岛现时受南极条约管理。

Casey Bay is a large Antarctic bay indenting the coast of Enderby Land between Tange Promontory and Dingle Dome. The feature was observed from Australian National Antarctic Research Expeditions aircraft in 1956. It was named by the Antarctic Names Committee of Australia for the Rt. Hon. Richard G. Casey (later Lord Casey), Australian Minister for External Affairs, 1951–60.