Cathy King, formerly Cathy Borst is a Canadian curler from St. Albert, Alberta. She is a former Canadian champion skip and world championship bronze medalist, and 2013 world senior champion. King was a national junior champion in 1977 and 1978, before there was a women's world junior championship. In 1988, she played for Alberta at the Canadian Mixed Curling Championship, losing in the final. She has been in seven Scotties Tournament of Hearts. She won the 1998 Scott Tournament of Hearts, and then won a Bronze Medal at the subsequent World Championships behind Elisabet Gustafson's team from Sweden and Helena Blach Lavrsen's team from Denmark. At the 2005 Scott Tournament of Hearts, she finished with a 6-5 round-robin record, then lost in a tie-breaker to Ontario's Jenn Hanna. In 2006, King won the Canada Cup of Curling defeating Jennifer Jones in the final. King returned to the Hearts in 2006, and she finished 6-5 again, and out of the playoffs. She has been part of three Olympic Curling Trials in 1997, 2001, 2005, and the pre-trials in 2009, but has never gone on to win. 

September 3rd, 1959 in Winnipeg (Age 65)