Florence Angela Margaret Mortimer-Barrett was a British world No. 1 tennis player. Mortimer won three major singles titles: the 1955 French Championships, the 1958 Australian Championships and 1961 Wimbledon Championships, the last won when she was partially deaf.
Mortimer also partnered with Anne Shilcock to win the women's doubles title at Wimbledon in 1955. She and Lorraine Coghlan also reached the women's doubles final at the 1958 Australian Championships. Mortimer and Peter Newman reached the mixed doubles final at the 1958 Australian Championships, her only mixed doubles final at a major.
Mortimer was married to the retired player and broadcaster John Barrett. She died in 2025.