2011 French Open – Men's singles

Defending champion Rafael Nadal defeated Roger Federer in the final, 7–5, 7–6(7–3), 5–7, 6–1 to win the men's singles tennis title at the 2011 French Open. It was his sixth French Open title and tenth major title overall, tying Björn Borg's record for the most French Open titles won in the Open Era. It was the fourth time Nadal defeated Federer in the French Open final. Federer was attempting to become the first man in the Open Era and the third man overall to achieve a double career Grand Slam.

Nadal and Novak Djokovic were in contention for the world No. 1 ranking. Nadal retained the top ranking by defending the title.

This edition of the tournament saw the top four seeds advance to the semifinals. Federer ended Djokovic's 43-match winning streak dating back to the 2010 Davis Cup Finals, as well as his 41–0 unbeaten 2011 season. Djokovic was only one win away from tying John McEnroe's 1984 record for the best unbeaten start to a season.

Although this was Nadal's sixth title at the French Open, it was the first time since 2001 in which the top seed won the title.

Seeds
• 🇪🇸 Rafael Nadal (champion)

• 🇷🇸 Novak Djokovic (semifinals)

• Roger Federer (final)

• 🇬🇧 Andy Murray (semifinals)

• 🇸🇪 Robin Söderling (quarterfinals)

• 🇨🇿 Tomáš Berdych (first round)

• 🇪🇸 David Ferrer (fourth round)

• 🇦🇹 Jürgen Melzer (second round)

• 🇫🇷 Gaël Monfils (quarterfinals)

• 🇺🇸 Mardy Fish (third round)

• 🇪🇸 Nicolás Almagro (first round)

• 🇷🇺 Mikhail Youzhny (third round)

• 🇫🇷 Richard Gasquet (fourth round)

•  Stanislas Wawrinka (fourth round)

• 🇷🇸 Viktor Troicki (fourth round)

• 🇪🇸 Fernando Verdasco (third round)

• 🇫🇷 Jo-Wilfried Tsonga (third round)

• 🇫🇷 Gilles Simon (fourth round)

•  Marin Čilić (first round)

• 🇩🇪 Florian Mayer (second round)

• 🇺🇦 Alexandr Dolgopolov (third round)

• 🇫🇷 Michaël Llodra (first round)

• 🇧🇷 Thomaz Bellucci (third round)

• 🇺🇸 Sam Querrey (second round)

• 🇦🇷 Juan Martín del Potro (third round)

• 🇨🇦 Milos Raonic (first round)

• 🇨🇾 Marcos Baghdatis (second round)

• 🇷🇺 Nikolay Davydenko (second round)

• 🇷🇸 Janko Tipsarević (third round)

• 🇪🇸 Guillermo García-López (third round)

• 🇺🇦 Sergiy Stakhovsky (third round)

•  Kevin Anderson (second round)