The 1998 Australian Open was a tennis tournament played on outdoor hard courts at Melbourne Park in Melbourne in Victoria in Australia. It was the 86th edition of the Australian Open and was held from 19 January through 1 February 1998.

Seniors

Men's singles

🇨🇿 Petr Korda defeated Marcelo Ríos 6–2, 6–2, 6–2

Women's singles

Martina Hingis defeated 🇪🇸 Conchita Martínez 6–3, 6–3

Men's doubles

🇸🇪 Jonas Björkman / Jacco Eltingh defeated 🇦🇺 Todd Woodbridge / 🇦🇺 Mark Woodforde 6–2, 5–7, 2–6, 6–4, 6–3

Women's doubles

Martina Hingis / Mirjana Lučić defeated 🇺🇸 Lindsay Davenport / 🇧🇾 Natasha Zvereva 6–4, 2–6, 6–3

Mixed doubles

🇺🇸 Venus Williams / 🇺🇸 Justin Gimelstob defeated 🇨🇿 Helena Suková / 🇨🇿 Cyril Suk 6–2, 6–1

Juniors

Boys' singles

🇫🇷 Julien Jeanpierre defeated 🇸🇪 Andreas Vinciguerra 4–6, 6–4, 6–3

Girls' singles

Jelena Kostanić defeated Wynne Prakusya 6–0, 7–5

Boys' doubles

🇫🇷 Jérôme Haehnel / 🇫🇷 Julien Jeanpierre defeated Mirko Pehar / Lovro Zovko 6–3, 6–3

Girls' doubles

🇦🇺 Evie Dominikovic / 🇦🇺 Alicia Molik defeated 🇳🇿 Leanne Baker / 🇳🇿 Rewa Hudson 6–3, 3–6, 6–2