1990 Australian Open

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.

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.

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