2023 Rancho Santa Fe Open – Singles

Marcela Zacarías was the defending champion but chose not to participate.

Yulia Starodubtseva won the title, defeating Lulu Sun in the final, 7–5, 6–3.

Seeds
• # 🇦🇷 Julia Riera (second round)

• # 🇺🇸 Elvina Kalieva (second round)

• # Tatiana Prozorova (first round)

• # 🇺🇦 Yulia Starodubtseva (champion)

• # 🇺🇸 Louisa Chirico (quarterfinals)

• # 🇨🇦 Stacey Fung (second round)

• # Anastasia Tikhonova (semifinals)

• # Lulu Sun (final)