1989 Singapore Open – Singles

Kelly Jones won in the final 6–1, 7–5 against Amos Mansdorf.

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


 * 1) 🇺🇸 Kevin Curren (semifinals)
 * 2) 🇮🇱 Amos Mansdorf (final)
 * 3) 🇦🇺 John Fitzgerald (first round)
 * 4) 🇦🇺 Wally Masur (semifinals)
 * 5)  Milan Šrejber (first round)
 * 6) 🇺🇸 Richard Matuszewski (first round)
 * 7) 🇺🇸 Jim Pugh (quarterfinals)
 * 8) 🇳🇿 Kelly Evernden (quarterfinals)