The 1989 Los Angeles Open was a men's tennis tournament played on outdoor hard courts at the Los Angeles Tennis Center in Los Angeles, California, United States as part of the 1989 Nabisco Grand Prix.

It was the 63rd edition of the tournament and was held from September 18 through September 24, 1989.

Fifth-seeded Aaron Krickstein won the singles title.

[3] Aaron Krickstein defeated Michael Chang 2–6, 6–4, 6–2 Martin Davis / Tim Pawsat defeated John Fitzgerald / Anders Järryd 7–5, 7–6