SS Mataafa was an American steamship that had a lengthy career on the Great Lakes of North America, first as a bulk carrier and later as a car carrier. She was wrecked in 1905 in Lake Superior just outside the harbor at Duluth, Minnesota, during a storm that was named after her. She was built as SS Pennsylvania in 1899, and renamed Mataafa when she was purchased in the same year by the Minnesota Steamship Company. After her 1905 wreck, she was raised and repaired, and served for another sixty years before being scrapped.