Christine Marie Evert (born December 21, 1954), known as Chris Evert Lloyd from 1979 to 1987, is an American former professional tennis player and world No. 1. Evert won 18 Grand Slam singles titles, including a record seven French Open titles and a joint-record six US Open titles (tied with Serena Williams). Evert held the world No. 1 ranking for 260 weeks and was the year-end world No. 1 seven times (1974–78, 1980, 1981). Along with her main rival Martina Navratilova, Evert dominated women's tennis for much of the 1970s and 1980s.

Evert reached 34 Grand Slam singles finals — a record for women's tennis. In singles, Evert reached the semifinals or better in 52 of the 56 Grand Slam tournaments she played, including 34 consecutive Grand Slam tournaments from the 1971 US Open through the 1983 French Open. She never lost in the first or second round of a Grand Slam tournament and lost in the third round only twice. Evert holds the record for the most consecutive years (13) in which she won at least one Grand Slam title. Evert's career singles match winning percentage is 89.97% (1309–146) — the second-highest in the Open Era among men and women. On clay courts, Evert's career singles match winning percentage is 94.55% (382–22) — still a WTA Tour record. She also won three Grand Slam doubles titles: two with Navratilova and one with Olga Morozova.

Evert served as president of the Women's Tennis Association for eleven years: in 1975–76 and 1983–91. She received the Philippe Chatrier Award and was inducted into the Hall of Fame. In later years, Evert was a coach, and she is now an ESPN analyst and has a line of tennis and activewear.

Evert was born in 1954 in Fort Lauderdale, Florida, to Colette (née Thompson) and Jimmy Evert and was raised in a devout Catholic family. She graduated from St. Thomas Aquinas High School in Fort Lauderdale in 1973.