Mary Louise Defender Wilson (born October 14, 1930), also known by her Dakotah name Wagmuhawin (Gourd Woman), is a storyteller, traditionalist, historian, scholar and educator of the Dakotah/Hidatsa people and a former director working in health care organizations. Her cultural work has been recognized with a National Heritage Fellowship in 1999 and a United States Artists fellowship in 2015, among many other honors.