| Radstock Bay | |
| Location: | Lancaster Sound |
| Coords: | 74.65°N -91°W |
| Pushpin Map: | Canada Nunavut |
| Countries: | Canada |
| Cities: | Uninhabited |
Radstock Bay is a waterway located in the Qikiqtaaluk Region, Nunavut, Canada. It lies off the southern coast of Devon Island in the eastern high Arctic. Like Maxwell Bay to the east, it is an arm of Lancaster Sound and Barrow Strait.
Cape Liddon, on its western headland, has significant populations of black guillemot and northern fulmar.[1]