The 1989 Australian Open was a tennis tournament played on outdoor hard courts at Flinders Park in Melbourne in Victoria in Australia. It was the 77th edition of the Australian Open and was held from 16 through 29 January 1989.

Seniors

Men's singles

Ivan Lendl defeated Miloslav Mečíř 6–2, 6–2, 6–2

Women's singles

Steffi Graf defeated Helena Suková 6–4, 6–4

Men's doubles

🇺🇸 Rick Leach / 🇺🇸 Jim Pugh defeated 🇦🇺 Darren Cahill / 🇦🇺 Mark Kratzmann 6–4, 6–4, 6–4

Women's doubles

🇺🇸 Martina Navratilova / 🇺🇸 Pam Shriver defeated 🇺🇸 Patty Fendick / 🇨🇦 Jill Hetherington 3–6, 6–3, 6–2

Mixed doubles

Jana Novotná / 🇺🇸 Jim Pugh defeated 🇺🇸 Zina Garrison / 🇺🇸 Sherwood Stewart 6–3, 6–4

Juniors

Boys' singles

🇸🇪 Nicklas Kulti defeated 🇦🇺 Todd Woodbridge 6–2, 6–0

Girls' singles

🇺🇸 Kim Kessaris defeated 🇺🇸 Andrea Farley 6–1, 6–2

Boys' doubles

🇦🇺 Johan Anderson / 🇦🇺 Todd Woodbridge defeated 🇦🇺 Andrew Kratzmann / 🇦🇺 Jamie Morgan 6–4, 6–2

Girls' doubles

Andrea Strnadová / Eva Švíglerová defeated 🇦🇺 Nicole Pratt / 🇦🇺 Angie Woolcock 6–2, 6–0