Marlene Stewart Streit, OC OOnt (born March 9, 1934) is a Canadian amateur golfer, and a member of the World Golf Hall of Fame.She was born in Cereal, Alberta. She learned golf from Gordon McInnis Sr. at the Lookout Point Golf Club in Fonthill, Ontario. She is the most successful Canadian amateur female golfer, and the only golfer in history to have won the Australian, British, Canadian and U.S. Women's Amateurs.