Jeļena Ostapenko defeated Simona Halep in the final, 4–6, 6–4, 6–3 to win the women's singles tennis title at the 2017 French Open. It was her first major title, and her first WTA Tour-level singles title overall. Ostapenko was the first Latvian to win a singles major, the youngest woman to win the French Open since Iva Majoli in 1997, and the first woman since Barbara Jordan at the 1979 Australian Open to win a major as her first tour-level singles title. Ostapenko was the first unseeded player to win a major since Kim Clijsters in the 2009 US Open. She was also the first unseeded player to win the event since Margaret Scriven in 1933, and the lowest-ranked to do so since the computerized rankings began in 1975.