2020 ASB Classic – Women's singles

Serena Williams defeated Jessica Pegula in the final, 6–3, 6–4 to win the women's singles tennis title at the 2020 ASB Classic. It was Williams’ 73rd and last WTA Tour-level singles title, and her first since giving birth to her daughter Olympia. The win made her the first player in the Open Era to win singles titles across four decades.

Julia Görges was the two-time defending champion, but lost in the quarterfinals to Caroline Wozniacki.

Seeds
• # 🇺🇸 Serena Williams (champion)

• # Petra Martić (second round)

• # 🇺🇸 Amanda Anisimova (semifinals)

• # 🇩🇪 Julia Görges (quarterfinals)

• # Caroline Wozniacki (semifinals)

• # 🇸🇪 Rebecca Peterson (first round)

• # Jeļena Ostapenko (withdrew)

• # 🇫🇷 Caroline Garcia (second round)

• # 🇧🇪 Alison Van Uytvanck (withdrew)

Seeds
• # 🇺🇸 Kristie Ahn (first round)

• # 🇪🇸 Paula Badosa (second round)

• # 🇷🇴 Ana Bogdan (first round)

• # 🇮🇹 Camila Giorgi (qualified)

• # 🇯🇵 Nao Hibino (second round)

• # 🇧🇪 Greet Minnen (qualified)

• # 🇪🇸 Aliona Bolsova (second round)

• # 🇧🇪 Ysaline Bonaventure (qualifying competition, lucky loser)

Qualifiers
• # 🇺🇸 Varvara Lepchenko

• # 🇺🇸 Ann Li

• # 🇧🇪 Greet Minnen

• # 🇮🇹 Camila Giorgi

Lucky losers
• # 🇧🇪 Ysaline Bonaventure

• # 🇺🇸 Usue Maitane Arconada

• # 🇺🇸 Caty McNally