摄政王湾（Prince Regent Inlet）是加拿大的海湾，位于索默塞特岛和布罗德半岛之间北冰洋海域，由努纳武特负责管辖，南面是布西亚湾，北面是兰开斯特海峡。

Prince Regent Inlet (73°00′N 090°30′W / 73.000°N 90.500°W / 73.000; -90.500 (Prince Regent Inlet)) is a body of water in Nunavut, Canada between the west end of Baffin Island (Brodeur Peninsula) and Somerset Island on the west. It opens north into Lancaster Sound and to the south merges into the Gulf of Boothia. The Arctic inlet's northern portion is approximately 40 mi (64 km) wide; the southern portion is approximately 65 mi (105 km) wide. It is deep throughout and there are no islands within the inlet.