Sonia Hilda Cox (25 December 1936 – 23 August 2001) was a New Zealand badminton and tennis player.
She attended Otago Girls' High School, where she continued to play badminton.
[2] In 1953, at age 16, she was part of the New Zealand badminton team which travelled to Tasmania, for a tour of competitions.
[3] In 1960, she was part of a New Zealand women's team which competed in the Uber Cup in the United States and progressed to the finals of the tournament.
[4] Cox played tennis competitively as well, including in the national tournaments in 1955 and 1956, and at The Championships, Wimbledon in 1958.