1978 ABN World Tennis Tournament – Singles

Dick Stockton was the defending champion of the singles event at the ABN World Tennis Tournament, but lost in the quarterfinals to first-seeded Jimmy Connors who won the title after a victory in the final against fourth-seeded Raúl Ramírez 7–5, 7–5.

Seeds
• #🇺🇸 Jimmy Connors (champion)

• #🇸🇪 Björn Borg (quarterfinals)

• #🇺🇸 Vitas Gerulaitis (semifinals)

• #🇲🇽 Raúl Ramírez (final)

• #🇺🇸 Sandy Mayer (second round)

• #🇺🇸 Dick Stockton (quarterfinals)

• #🇷🇴 Ilie Năstase (semifinals)

• #🇵🇱 Wojtek Fibak (first round)