The 1998 Thalgo Australian Women's Hardcourts was a women's tennis tournament played on outdoor hard courts at the Hope Island Resort Tennis Centre in Hope Island, Queensland in Australia that was part of Tier III of the 1998 WTA Tour.

Fourth-seeded Ai Sugiyama won the singles title and earned $27,000 first-prize money.

Ai Sugiyama defeated Maria Vento 7–5, 6–0.

[1] Elena Likhovtseva / 'Ai Sugiyama defeated Sung-Hee Park / Shi-Ting Wang 1–6, 6–3, 6–4.

[1] 27°52′18″S 153°21′01″E / 27.8717°S 153.3504°E / -27.8717; 153.3504 (Hope Island Resort Tennis Centre)