2025 French Open – Men's singles

Defending champion Carlos Alcaraz defeated Jannik Sinner in the final, 4–6, 6–7^(4–7), 6–4, 7–6^(7–3), 7–6^(10–2) to win the men's singles tennis title at the 2025 French Open. It was his second French Open title and fifth major title overall. Alcaraz came from two sets down and saved three championship points en route to the title, becoming the third man in the Open Era to win a major after being championship points down, following Gastón Gaudio at the 2004 French Open and Novak Djokovic at the 2019 Wimbledon Championships. Both players served for the championship (Sinner at 5–4 in the fourth set, Alcaraz at 5–4 in the fifth set), but both were broken.

At 5 hours and 29 minutes, it was the longest French Open final in history (surpassing the 1982 final), and the second-longest major final overall, behind only the 2012 Australian Open final. Alcaraz was the second man in the Open Era (after Roger Federer) to win his first five major finals and the second-youngest to win a fifth major, behind only Björn Borg (at 22 years and 5 days) and tied with Rafael Nadal (at exact same age of 22 years, 1 month and 3 days). It was the first French Open singles final to be decided in a final-set tiebreak (after the tiebreak rule was added in 2022), and the first men's final at any major to be contested by two players born in the 2000s.

With his fourth-round win, Djokovic became the second player (after Nadal) to achieve 100 career match wins at the French Open, as well as the third man to win 100 matches at a major, alongside Nadal at the French Open and Federer at both the Australian Open and Wimbledon Championships. Additionally, Djokovic broke Federer's record for the most quarterfinals at one major, with 19, and was the second-oldest man in the Open Era to reach the French Open semifinals (after Pancho Gonzales in 1968).

This marked the first time in the Open Era that two Italian men (Lorenzo Musetti and Sinner) reached the semifinals of a singles major, and the first time at the French Open since Nicola Pietrangeli and Orlando Sirola in 1960. Additionally, Sinner was the first Italian man to reach the French Open final since Adriano Panatta won the 1976 title. Alexander Bublik became the first Kazakhstani man to reach a major singles quarterfinal. Tommy Paul and Frances Tiafoe were the first American men to reach the French Open quarterfinals since Andre Agassi in 2003, marking the first time that multiple American men did so since Pete Sampras and Jim Courier in 1996. With his win over Hugo Dellien in the first round, Gaël Monfils claimed his 40th career main draw match win, equaling Yannick Noah for the most singles main-draw wins at the tournament by a French player.

This tournament marked the final professional appearance of former world No. 7 and three-time major semifinalist Richard Gasquet, who lost in the second round to Sinner. His 22nd participation at the event was the most in the Open Era, and equaled the all-time record of Antoine Gentien.