Dan Goldie was the defending champion but did not compete that year.
Robert Van't Hof won in the final 7–5, 6–4 against Brad Drewett.
Seeds
John Fitzgerald (semifinals) Kelly Evernden (semifinals) Scott Davis (first round) Olli Rahnasto (first round) Glenn Layendecker (first round) Brad Drewett (final) Paul Chamberlin (quarterfinals) Christian Saceanu (first round)
Draw
Finals
Top half
Bottom half
References
External links 1989 Seoul Open draw