The 2005 French Open was the 104th edition of the tournament. Rafael Nadal, seeded fourth at his first French Open (but was actually ranked World No. 5 at the time after then-World No. 2 Lleyton Hewitt withdrew from the tournament due to injury), was a strong favorite after winning the Rome and Monte Carlo Masters, with Guillermo Coria, a 2004 finalist and runner-up in Monaco, calling Nadal the best clay-court player in the world prior to the tournament. After defeating top seed Roger Federer in the semi-finals, Nadal defeated Argentina's Mariano Puerta to claim his first French Open titles, and the first of four won consecutively from 2005 until 2008.
In the women's draw, Justine Henin-Hardenne won her second French Open title, defeating 2000 champion Mary Pierce in the final in just 62 minutes. 2005 marked the first of three consecutive years in which Justine Henin would win the Women's Singles title.
Gastón Gaudio and Anastasia Myskina were unsuccessful in defending their 2004 titles, Gaudio losing in the fourth round and Myskina being upset in the first round. This tournament was also notable for the rise of future French Open champion Ana Ivanovic, who upset the 3rd seed Amélie Mauresmo in the third round, before going on to defeat another future champion in Francesca Schiavone on her way to her first Grand Slam quarter-final appearance in what was just her second Grand Slam tournament.
23x15px Rafael Nadal defeated 23x15px Mariano Puerta, 6–7(6–8), 6–3, 6–1, 7–5
- It was Nadal's 6th title of the year, and his 7th overall. It was his 1st career Grand Slam title.
23x15px Justine Henin-Hardenne defeated 23x15px Mary Pierce, 6–1, 6–1
- It was Henin-Hardenne's 4th title of the year, and her 23rd overall. It was her 4th career Grand Slam title, and her 2nd French Open title.
23x15px Jonas Björkman / 23x15px Max Mirnyi defeated 23x15px Mike Bryan / 23x15px Bob Bryan, 2–6, 6–1, 6–4
23x15px Virginia Ruano Pascual / 23x15px Paola Suárez defeated 23x15px Cara Black / 23x15px Liezel Huber, 4–6, 6–3, 6–3
23x15px Daniela Hantuchová / 23x15px Fabrice Santoro defeated 23x15px Martina Navrátilová / Template:Country data IND Leander Paes, 3–6, 6–3, 6–2
23x15px Marin Čilić defeated 23x15px Antal van der Duim, 6–3, 6–1
23x15px Ágnes Szávay defeated 23x15px Raluca-Ioana Olaru, 6–2, 6–1
23x15px Emiliano Massa / 23x15px Leonardo Mayer defeated 23x15px Sergey Bubka / 23x15px Jérémy Chardy, 2–6, 6–3, 6–4
23x15px Victoria Azarenka / 23x15px Ágnes Szávay defeated 23x15px Raluca-Ioana Olaru / Template:Country data KAZ Amina Rakhim, 4–6, 6–4, 6–0
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