斯潘塞湾 （Spencer Gulf）澳大利亚南海岸南澳大利亚州的印度洋三角湾。位于艾尔半岛与约克半岛之间，最宽处80英里，长200英里。约克半岛将相对较小的圣文森特湾与斯潘塞湾隔开。

The Spencer Gulf is the westernmost of two large inlets on the southern coast of Australia, in the state of South Australia, facing the Great Australian Bight. The Gulf is 322 km (200 mi) long and 129 km (80 mi) wide at its mouth. The western shore of the Gulf is the Eyre Peninsula, while the eastern side is the Yorke Peninsula, which separates it from the smaller Gulf St Vincent. Its entrance was defined by Matthew Flinders as a line from Cape Catastrophe on Eyre Peninsula to Cape Spencer on Yorke Peninsula.