1989 New South Wales Open
Date	9–15 January
Edition	97th
Surface	Hard / Outdoor
Location	Sydney, Australia
Venue	NSW Tennis Centre
Champions
Men's singles
Aaron Krickstein
Women's singles
Martina Navratilova
Men's doubles
Darren Cahill / Wally Masur
Women's doubles
Martina Navratilova / Pam Shriver
← 1988 · New South Wales Open · 1990 →

The 1989 New South Wales Open was a tennis tournament played on outdoor hard courts at the NSW Tennis Centre in Sydney in Australia that was part of the 1989 Nabisco Grand Prix and of Tier IV of the 1989 WTA Tour. It was the 97th edition of the tournament (the 21st in the Open Era) and was held from 9 through 15 January 1989.

Finals

Men's singles

Aaron Krickstein defeated Andrei Cherkasov 6–4, 6–2

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

Women's singles

Martina Navratilova defeated Catarina Lindqvist 6–2, 6–4

• It was Navrátilová's 1st title of the year and the 282nd of her career.

Men's doubles

Darren Cahill / Wally Masur defeated Pieter Aldrich / Danie Visser 6–4, 6–3

• It was Cahill's 1st title of the year and the 8th of his career. It was Masur's 1st title of the year and the 11th of his career.

Women's doubles

Martina Navratilova / Pam Shriver defeated Elizabeth Smylie / Wendy Turnbull 6–3, 6–3

• It was Navratilova's 2nd title of the year and the 283rd of her career. It was Shriver's 1st title of the year and the 117th of her career.