2018 Oracle Challenger Series – Indian Wells – Women's singles

This was the first edition of the tournament.

Sara Errani won the title, defeating Kateryna Bondarenko in the final 6–4, 6–2.

Seeds
• # 🇵🇱 Magda Linette (second round)

• # 🇺🇸 Varvara Lepchenko (second round, retired)

• # Hsieh Su-wei (second round)

• # 🇺🇦 Kateryna Bondarenko (final)

• # 🇺🇸 Jennifer Brady (first round)

• # 🇮🇹 Francesca Schiavone (first round)

• # 🇷🇺 Natalia Vikhlyantseva (first round)

• # 🇨🇳 Duan Yingying (second round)

Seeds
• # 🇨🇳 Wang Yafan (qualified)

• # 🇬🇧 Naomi Broady (qualified)

• # 🇧🇾 Vera Lapko (qualifying competition)

• # 🇨🇿 Barbora Krejčíková (first round)

• # 🇯🇵 Risa Ozaki (first round)

• # 🇰🇷 Jang Su-jeong (qualifying competition)

• # 🇮🇹 Sara Errani (qualified)

• # 🇯🇵 Misaki Doi (qualified)

• # 🇺🇸 Amanda Anisimova (qualified)

• # 🇺🇸 Julia Boserup (qualifying competition)

• # 🇺🇸 Victoria Duval (qualified)

• # 🇺🇸 Louisa Chirico (qualifying competition)

Qualifiers
• # 🇨🇳 Wang Yafan

• # 🇬🇧 Naomi Broady

• # 🇯🇵 Misaki Doi

• # 🇮🇹 Sara Errani

• # 🇺🇸 Victoria Duval

• # 🇺🇸 Amanda Anisimova