Marjorie Blackwood is a Canadian former professional tennis player. She was born May 1, 1957 in Karachi, Pakistan to a Canadian government officer. She grew up in Detroit and Ottawa and later attended the University of Texas to study journalism. She became a professional tennis player in 1978 and reached a career-high WTA singles ranking of No. 48 in August 1981. Blackwood reached the quarterfinals in doubles at Wimbledon with Susan Leo in 1981 and 1982, and at the French Open with Pam Whytcross in 1980. Blackwood has won nine WTA doubles and was also a runner-up in four more events. She was coach and captain of the Canadian Fed Cup team in 1983. She was named Tennis Canada female player of the year in 1982. She retired in 1994 and pursued a degree in English Literature at UBC. After her retirement, she and her husband Peter Schelling were Tennis Directors at Whistler Tennis Club and General Manager at Whistler Racquet Club from 1995 to 2010. She was inducted into the Canadian Tennis Hall of Fame in 1998. They now run doubles tennis camps on Salt Spring Island, BC, where they currently live. She is the owner and operator of Westcoasttennis.com which delivers tennis clinics on Salt Spring Island and in Whistler.