1998 Toyota Princess Cup
‹ The template (Infobox tennis event) is being considered for merging. ›
The 1998 Toyota Princess Cup was a tennis tournament played on outdoor hard courts at the Ariake Coliseum in Tokyo in Japan that was part of Tier II of the 1998 WTA Tour. The tournament was held from September 21 through September 27, 1998.
Champions
Women's singles
Monica Seles defeated Arantxa Sánchez Vicario 4–6, 6–3, 6–4
- It was Seles' 2nd title of the year and the 48th of her career.
Women's doubles
Anna Kournikova / Monica Seles defeated Mary Joe Fernández / Arantxa Sánchez Vicario 6–4, 6–4
- It was Kournikova's only title of the year and the 1st of her career. It was Seles' 3rd title of the year and the 49th of her career.