2019 China Open – Women's singles

Naomi Osaka defeated Ashleigh Barty in the final, 3–6, 6–3, 6–2 to win the women's singles tennis title at the 2019 China Open. It was Osaka's second Premier Mandatory-level title.

Caroline Wozniacki was the defending champion, but lost to Osaka in the semifinals.

Barty and Karolína Plíšková were in contention for the WTA no. 1 singles ranking at the start of the tournament. Barty retained the top ranking when Plíšková lost in the first round to Jeļena Ostapenko.

Seeds
• 🇦🇺 Ashleigh Barty (final)

• 🇨🇿 Karolína Plíšková (first round)

• 🇺🇦 Elina Svitolina (quarterfinals)

• 🇯🇵 Naomi Osaka (champion)

• 🇨🇦 Bianca Andreescu (quarterfinals)

• 🇷🇴 Simona Halep (second round)

• 🇨🇿 Petra Kvitová (quarterfinals)

• Kiki Bertens (semifinals)

• Belinda Bencic (third round)

• 🇩🇪 Angelique Kerber (second round)

• 🇺🇸 Madison Keys (second round)

• 🇧🇾 Aryna Sabalenka (second round)

• 🇺🇸 Sloane Stephens (second round)

• 🇨🇳 Wang Qiang (first round, retired)

• 🇺🇸 Sofia Kenin (third round)

• Caroline Wozniacki (semifinals)

The four Wuhan semifinalists received a bye into the second round. They are as follows:
 * 🇦🇺 Ashleigh Barty
 * 🇨🇿 Petra Kvitová
 * 🇺🇸 Alison Riske
 * 🇧🇾 Aryna Sabalenka

Seeds
• # 🇵🇱 Magda Linette (qualified)

• # 🇸🇪 Rebecca Peterson (qualified)

• # 🇹🇳 Ons Jabeur (first round)

• # 🇨🇿 Marie Bouzková (qualifying competition, retired)

• # 🇺🇸 Lauren Davis (qualified)

• # 🇷🇺 Anna Blinkova (qualified)

• # Tamara Zidanšek (qualifying competition)

• # 🇺🇸 Jennifer Brady (qualified)

• # 🇷🇺 Anastasia Potapova (qualifying competition)

• # 🇯🇵 Misaki Doi (qualifying competition)

• # 🇺🇦 Kateryna Kozlova (qualifying competition)

• # 🇰🇿 Zarina Diyas (qualifying competition)

• # 🇨🇿 Kristýna Plíšková (withdrew, still competing in Tashkent)

• # 🇺🇸 Bernarda Pera (qualified)

• # 🇩🇪 Andrea Petkovic (qualified)

• # 🇪🇸 Paula Badosa (first round)

Qualifiers
• # 🇵🇱 Magda Linette

• # 🇸🇪 Rebecca Peterson

• # 🇺🇸 Bernarda Pera

• # 🇩🇪 Andrea Petkovic

• # 🇺🇸 Lauren Davis

• # 🇷🇺 Anna Blinkova

• # 🇺🇸 Christina McHale

• # 🇺🇸 Jennifer Brady