1978 French Open – Men's singles

Men's singles
1978 French Open
Champion Björn Borg
Runner-up Guillermo Vilas
Score6–1, 6–1, 6–3
Draw128
Seeds16

Björn Borg defeated defending champion Guillermo Vilas in the final, 6–1, 6–1, 6–3 to win the men's singles tennis title at the 1978 French Open. It was his third French Open title and fifth major title overall. Borg did not lose a set during the tournament, and dropped only 32 games in total, an Open Era record in men's singles.

This tournament marked the first major appearance of future world No. 1 and eight-time major champion Ivan Lendl.