Guillermo Vilas defeated Brian Gottfried in the final, 6–0, 6–3, 6–0 to win the men's singles tennis title at the 1977 French Open.

[1] It was his first major singles title.

He was the first Argentine to win a singles major.

Adriano Panatta was the defending champion, but lost in the quarterfinals to Raúl Ramírez.

Guillermo Vilas is the champion; others show the round in which they were eliminated.