1981 ABN World Tennis Tournament – Singles

Heinz Günthardt was the defending champion of the singles event at the ABN World Tennis Tournament, but did not participate in this edition. First-seeded Jimmy Connors won the title after a victory in the final against second-seeded Gene Mayer 6–1, 2–6, 6–2.

Seeds
• #🇺🇸 Jimmy Connors (champion)

• #🇺🇸 Gene Mayer (final)

• #🇵🇱 Wojtek Fibak (semifinals)

• #🇫🇷 Yannick Noah (quarterfinals)

• #🇺🇸 Brian Gottfried (semifinals)

• #🇭🇺 Balázs Taróczy (first round)

• #🇮🇳 Vijay Amritraj (second round)

• #🇺🇸 Bob Lutz (first round)