Wager Bay is a long, narrow saltwater inlet in the Kivalliq Region of Nunavut, Canada, opening east into Roes Welcome Sound at the northwest end of Hudson Bay. The bay is entirely surrounded by Ukkusiksalik National Park. It stretches through tundra terrain, with a shoreline measuring approximately 150 kilometers in length and a surface elevation of 51 meters above sea level. The bay's geography includes the Savage Islands and Paliak Islands. As a coastal inlet, it is subject to tidal influences, and tide times and current predictions are available for this location. The bay drains a vast area of 28,551 square kilometers via several small rivers, including the Brown River and Sila River. Given its high-latitude Arctic location, paddling is highly seasonal and entirely dependent on ice conditions; the bay was historically trapped by ice for weeks at a time. The surrounding national park status implies that paddlers must adhere to all applicable park regulations and permits. The area is remote, with no facilities or amenities for paddlers, requiring complete self-sufficiency. The historical significance includes its charting in 1742 and naming after Sir Charles Wager.