Novak Djokovic defeated Casper Ruud in the final, 7–6(7–1), 6–3, 7–5 to win the men's singles tennis title at the 2023 French Open.

[1] Djokovic became the first man to achieve a triple career Grand Slam in singles, and the oldest champion in French Open history at the age of 36 years and 20 days.

[2] Nadal was the reigning champion,[3] but withdrew due to a left hip injury.

† The player did not qualify for the main draw in 2022 but is defending points from an ATP Challenger Tour event (Little Rock).

The entry list was released based on the ATP rankings for the week of 17 April 2023.