The 1999 Thalgo Australian Women's Hardcourts singles was the singles event of the third edition of the Thalgo Australian Women's Hardcourts; a WTA Tier III tournament held in the Gold Coast. Ai Sugiyama was the defending champion but lost in the semifinals to Patty Schnyder.
Schnyder won in the final 4–6, 7–6(7–5), 6–2 against Mary Pierce.
The top two seeds received a bye to the second round.
