Ilana Sheryl Kloss (born 22 March 1956) is a former professional tennis player, tennis coach, and commissioner of World TeamTennis from 2001-21. She was the World's No. 1 ranked doubles player in 1976, and World No. 19 in singles in 1979. She won the Wimbledon juniors singles title in 1972, the US Open juniors singles title in 1974, and the US Open Doubles and French Open Mixed Doubles titles in 1976. She won three gold medals at the 1973 Maccabiah Games in Israel.