The 2003 French Open was the second Grand Slam event of 2003 and the 102nd edition of the French Open.

It took place at the Stade Roland Garros in Paris, France, from May 26 through June 8, 2003.

Both Albert Costa and Serena Williams were unsuccessful in their title defences, both being defeated in the semi-finals by eventual champions Juan Carlos Ferrero and Justine Henin-Hardenne respectively.

Ferrero won his first Grand Slam title, defeating Martin Verkerk in the final, and Henin-Hardenne, who had previously won the event in 1997 as a junior, won after defeating Serena Williams, who had won the previous four Grand Slam events, in the semi-final and compatriot and rival Kim Clijsters in the final in straight sets.

Juan Carlos Ferrero defeated Martin Verkerk,[a] 6–1, 6–3, 6–2 Justine Henin-Hardenne[b] defeated Kim Clijsters, 6–0, 6–4[c] Mike Bryan / Bob Bryan defeated Paul Haarhuis / Yevgeny Kafelnikov, 7–6, 6–3 Kim Clijsters / Ai Sugiyama defeated Virginia Ruano Pascual / Paola Suárez, 6–7(5), 6–2, 9–7 Lisa Raymond / Mike Bryan defeated Elena Likhovtseva / Mahesh Bhupathi, 6–3, 6–4 Stanislas Wawrinka[d] defeated Brian Baker, 7–5, 4–6, 6–3 Anna-Lena Grönefeld defeated Vera Dushevina, 6–4, 6–4 György Balázs / Dudi Sela defeated Kamil Čapkovič / Lado Chikhladze, 5–7, 6–1, 6–2 Marta Fraga Pérez / Adriana González Peñas defeated Kateřina Böhmová / Michaëlla Krajicek, 6–0, 6–3