Two-time defending champion Björn Borg defeated Jimmy Connors in a rematch of the previous year's final, 6–2, 6–2, 6–3 to win the gentlemen's singles tennis title at the 1978 Wimbledon Championships. It was his third Wimbledon title and sixth major title overall.

Seeds

🇸🇪 Björn Borg (champion) 🇺🇸 Jimmy Connors (final) 🇺🇸 Vitas Gerulaitis (semifinals) 🇦🇷 Guillermo Vilas (third round) 🇺🇸 Brian Gottfried (quarterfinals) 🇺🇸 Roscoe Tanner (fourth round) 🇲🇽 Raúl Ramírez (quarterfinals) 🇺🇸 Sandy Mayer (quarterfinals) Ilie Năstase (quarterfinals) 🇺🇸 Dick Stockton (first round) 🇺🇸 John McEnroe (first round) 🇬🇧 Buster Mottram (second round) 🇵🇱 Wojciech Fibak (fourth round) 🇦🇺 John Alexander (fourth round) 🇺🇸 Arthur Ashe (first round) 🇦🇺 John Newcombe (fourth round)

Qualifying

Draw

Finals

Top half

Section 1

Section 2

Section 3

Section 4

Bottom half

Section 5

Section 6

Section 7

Section 8