1990 Australian Open
Date	15–28 January 1990
Edition	78th
Category	Grand Slam (ITF)
Surface	Hardcourt (Rebound Ace)
Location	Melbourne, Australia
Venue	National Tennis Centre at Flinders Park
Champions
Men's singles
Ivan Lendl
Women's singles
Steffi Graf
Men's doubles
Pieter Aldrich / Danie Visser
Women's doubles
Jana Novotná / Helena Suková
Mixed doubles
Natasha Zvereva / Jim Pugh
Boys' singles
Dirk Dier
Girls' singles
Magdalena Maleeva
Boys' doubles
Roger Pettersson / Mårten Renström
Girls' doubles
Rona Mayer / Limor Zaltz
← 1989 · Australian Open · 1991 →

The 1990 Australian Open was a tennis tournament played on outdoor hard courts at Flinders Park in Melbourne in Victoria in Australia. It was the 78th edition of the Australian Open and was held from 15 through 28 January 1990.

Seniors

Men's singles

Ivan Lendl defeated Stefan Edberg 4–6, 7–6^(7–3), 5–2 (Edberg retired)

• It was Lendl's 8th and last career Grand Slam title and his 2nd Australian Open title.

Women's singles

Steffi Graf defeated Mary Joe Fernández 6–3, 6–4

• It was Graf's 9th career Grand Slam title and her 3rd Australian Open title.

Men's doubles

Pieter Aldrich / Danie Visser defeated Grant Connell / Glenn Michibata 6–4, 4–6, 6–1, 6–4

• It was Aldrich's 1st career Grand Slam title and his only Australian Open title. It was Visser's 1st career Grand Slam title and his 1st Australian Open title.

Women's doubles

Jana Novotná / Helena Suková defeated Patty Fendick / Mary Joe Fernández 7–6^(7–5), 7–6^(8–6)

• It was Novotná's 6th career Grand Slam title and her 3rd Australian Open title. It was Suková's 4th career Grand Slam title and her 1st Australian Open title.

Mixed doubles

Natasha Zvereva / Jim Pugh defeated Zina Garrison / Rick Leach 4–6, 6–2, 6–3

• It was Zvereva's 2nd career Grand Slam title and her 1st Australian Open title. It was Pugh's 7th career Grand Slam title and his 5th and last Australian Open title.

Juniors

Boys' singles

Dirk Dier defeated Leander Paes 6–4, 7–6

Girls' singles

Magdalena Maleeva defeated Louise Stacey 7–5, 6–7, 6–1

Boys' doubles

Roger Pettersson / Mårten Renström defeated Robert Janecek / Ernesto Munoz de Cote 4–6, 7–6, 6–1

Girls' doubles

Rona Mayer / Limor Zaltz defeated Justine Hodder / Nicole Pratt 6–4, 6–4

Prize money