1989 South Australian Open
Date	2–9 January
Edition	45th Australian Hard Court Championships 88th South Australian Open
Category	Grand Prix circuit
Surface	Hard / outdoor
Location	Adelaide, Australia
Venue	Memorial Drive Park
Champions
Singles
Mark Woodforde[1]
Doubles
Neil Broad / Stefan Kruger[2]
← 1988 · South Australian Open · 1990 →

The 1989 South Australian Open also known as the Australian Hard Court Championships was a men's Grand Prix tennis circuit tournament played on outdoor hard courts at the Memorial Drive Park in Adelaide, Australia and was part of the 1989 Nabisco Grand Prix. The tournament was held from 2 January through 9 January 1989. Fourth-seeded Mark Woodforde won his second consecutive singles title at the event.

Finals

Singles

Mark Woodforde defeated Patrik Kühnen 7–5, 1–6, 7–5

• It was Woodforde's 1st title of the year and the 5th of his career.

Doubles

Neil Broad / Stefan Kruger defeated Mark Kratzmann / Glenn Layendecker 6–2, 7–6

• It was Broad's 1st title of the year and the 1st of his career. It was Kruger's only title of the year and the 1st of his career.