Erhardt Island is one of the many uninhabited Canadian arctic islands in Qikiqtaaluk Region, Nunavut. It is located at the confluence of Hudson Strait and the Labrador Sea. The island has an elevation of 107 m above sea level. It is a member of the Button Islands and is situated 1.5 mi west of MacColl Island. Other islands in the immediate vicinity include Clark Island, King Island, Lawson Island, Leading Island, and Observation Island.