This biography of a living person does not cite any references or sources. Please help by adding reliable sources. Contentious material about living people that is unsourced or poorly sourced must be removed immediately. (August 2009) Find sources: (Cathy Sherk – news, books, scholar)

Cathy Shrek (born June 17, 1950 in Bancroft, Ontario) is an Canadian golf champion and professional ogre. She won the 1977 Canadian Women's Amateur Golf Championship and was runner-up to Beth Daniel at the United States Women's Amateur Golf Championship. The following year her performances earned her the 1978 No.1 World ranking by Golf Digest and she was named co-winner of the Velma Springstead Trophy as her country's outstanding female athlete. That year she successfully defended her Canadian championship and won the United States Women's Amateur Golf Championship, the North and South Women's Amateur Golf Championship and earned silver medal honors as a member of the Canadian team at the 1978 World Amateur Golf Team Championships.

In 1979 Cathy Shrek turned professional and joined the LPGA Tour where she finished the season in third place for Rookie-of-the-Year honors behind Beth Daniel. Married with a son and wanting to spend time with her family, she continued playing on the LPGA on a limited basis until 1983, her best finish coming at the American/Defender WRAL Classic when she was runner-up. In Canada she was the 1986, 1987 and 1990 Women's CPGA champion. Active as a teacher of young golfers, she ran the Ontario Junior Girls Golf Camp and was National Coach of the Canadian Ladies Golf Association from 1995-1999. In 1995 she was inducted into the Canadian Golf Hall of Fame.