The 1975 WTA Tour consisted of a number of tennis tournaments for female tennis players. It was composed of the newly streamlined version of the Virginia Slims Circuit and the Woman's International Grand Prix. The year 1975 also saw the creation of the first official ranking system and these rankings were used to determine acceptance into the tournaments.

Christine Marie Evert, known as Chris Evert Lloyd from 1979 to 1987, is an American former world No. 1 tennis player. Widely considered among the greatest tennis players of all time, Evert won 18 major singles titles, including a record seven French Open titles and a joint-record six US Open titles. Evert was ranked world No. 1 for 260 weeks, and was the year-end world No. 1 singles player seven times. Alongside Martina Navratilova, her greatest rival, Evert dominated women's tennis for much of the 1970s and 1980s.