1978 World Championship Tennis Finals – Singles

Jimmy Connors was the defending champion but did not compete that year.

Vitas Gerulaitis won in the final 6–3, 6–2, 6–1 against Eddie Dibbs.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated.


 * 1) 🇸🇪 Björn Borg (semifinals, withdrew)
 * 2) 🇺🇸 Brian Gottfried (quarterfinals)
 * 3) 🇺🇸 Vitas Gerulaitis (champion)
 * 4)  Ilie Năstase (quarterfinals)
 * 5) 🇺🇸 Eddie Dibbs (final)
 * 6) 🇲🇽 Raúl Ramirez (quarterfinals)
 * 7) 🇮🇹 Corrado Barazzutti (semifinals)
 * 8) 🇺🇸 Dick Stockton (quarterfinals)