1999 Sydney International – Women's singles

Women's singles
1999 Sydney International
Champion Lindsay Davenport
Runner-up Martina Hingis
Score6–4, 6–3
Draw28
Seeds8

The 1999 Sydney International women's singles, was the singles event of the fourteenth edition of the ASB Classic; a WTA Tier II tournament and the second most prestigious women's tennis tournament held in Australia. Arantxa Sánchez Vicario was the defending champion but lost in the quarterfinals to Barbara Schett.

Lindsay Davenport won in the final 6–4, 6–3 against Martina Hingis.