1991 KAL Cup Korea Open – Singles

Alex Antonitsch was the defending champion, but he lost in the quarterfinals this year.

Patrick Baur won the tournament, beating Jeff Tarango in the final, 6–4, 1–6, 7–6(7–5).

Seeds
• # Jan Siemerink (semifinals)

• # 🇦🇹 Alex Antonitsch (semifinals)

• # 🇺🇸 Jim Grabb (first round)

• # Richard Krajicek (quarterfinals)

• # 🇩🇪 Alexander Mronz (first round)

• # 🇮🇱 Gilad Bloom (semifinals)

• # 🇨🇦 Grant Connell (first round)

• # 🇩🇪 Patrik Kühnen (first round)