Hall Island (Russian: Холл) is a small island located 3.5 miles (5.6 km) to the northwest of St. Matthew Island in the Bering Sea in Alaska, United States. It serves as a haulout site for Pacific walrus. It is 5 miles (8 km) in length and has a land area of 6.2 square miles (16 km2). The highest point is 1,610 feet (490 m). Hall Island is uninhabited. It is part of the Bering Sea unit of the Alaska Maritime National Wildlife Refuge and is protected as part of the Bering Sea Wilderness.