avy Board Inlet (73°00′N 080°50′WCoordinates: 73°00′N 080°50′W) is a body of water in Nunavut's Qikiqtaaluk Region. It is an arm of Lancaster Sound, after which it proceeds southerly before it empties into Eclipse Sound. It is 113 km (70 mi) long and 10 to 29 km (6.2 to 18.0 mi) wide.
The inlet separates Baffin Island to the west from Bylot Island to the east, making it part of the Sirmilik National Park. There are a few islands within Navy Board Inlet, including the Wollaston Islands.