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.

Petr Korda defeated Marcelo Ríos 6–2, 6–2, 6–2 Martina Hingis defeated Conchita Martínez 6–3, 6–3 Jonas Björkman / Jacco Eltingh defeated Todd Woodbridge / Mark Woodforde 6–2, 5–7, 2–6, 6–4, 6–3 Martina Hingis / Mirjana Lučić[a] defeated Lindsay Davenport / Natasha Zvereva 6–4, 2–6, 6–3 Venus Williams / Justin Gimelstob defeated Helena Suková / Cyril Suk 6–2, 6–1 Julien Jeanpierre defeated Andreas Vinciguerra 4–6, 6–4, 6–3 Jelena Kostanić defeated Wynne Prakusya 6–0, 7–5 Jérôme Haehnel / Julien Jeanpierre defeated Mirko Pehar / Lovro Zovko 6–3, 6–3 Evie Dominikovic / Alicia Molik defeated Leanne Baker / Rewa Hudson 6–3, 3–6, 6–2