| Men's Singles | |
|---|---|
| 1978 French Open | |
| Champion |
|
| Runner-up |
|
| Final score | 6-1, 6-1, 6-3 |
Björn Borg defeated defending champion Guillermo Vilas 6–1, 6–1, 6–3 in the final to win the Men's Singles tennis title at the 1978 French Open. Borg did not lose a single set in the event. The tournament also featured the first grand slam appearance of Ivan Lendl.
The seeded players are listed below. Björn Borg is the champion; others show the round in which they were eliminated.