2015 Apia International Sydney – Women's singles

The 2015 Apia International Sydney women's singles was a joint 2015 ATP World Tour and 2015 WTA Tour tennis tournament, played on outdoor hard courts in Sydney, New South Wales, Australia.

Tsvetana Pironkova was the defending champion, but lost in the semifinals to Petra Kvitová. Kvitová won the title by defeating compatriot Karolína Plíšková in the final, 7–6 (7–5), 7–6 (8–6).

Seeds
The top two seeds received a bye into the second round. • # 🇷🇴 Simona Halep (withdrew because of gastrointestinal illness)

• # 🇨🇿 Petra Kvitová (champion)

• # 🇵🇱 Agnieszka Radwańska (second round)

• # Caroline Wozniacki (first round, retired because of a left wrist injury)

• # 🇩🇪 Angelique Kerber (semifinals)

• # 🇷🇺 Ekaterina Makarova (second round)

• # 🇸🇰 Dominika Cibulková (second round)

• # 🇮🇹 Flavia Pennetta (first round)

Seeds
• # 🇧🇬 Tsvetana Pironkova (qualified)

• # 🇷🇴 Irina-Camelia Begu (first round)

• # Timea Bacsinszky (withdrew, still competing in Shenzhen)

• # 🇨🇳 Zhang Shuai (first round)

• # 🇰🇿 Yaroslava Shvedova (first round)

• # 🇫🇷 Kristina Mladenovic (qualified)

• # 🇺🇸 Shelby Rogers (first round)

• # 🇸🇰 Anna Schmiedlová (second round)

• # 🇧🇪 Yanina Wickmayer (first round)

Qualifiers
• # 🇧🇬 Tsvetana Pironkova

• # 🇺🇦 Lesia Tsurenko

• # Polona Hercog

• # 🇫🇷 Kristina Mladenovic

Lucky loser

 * 1) 🇺🇸 Nicole Gibbs