1998 US Open – Girls' singles

Cara Black was the defending champion, but did not compete this year.

Jelena Dokic won the title by defeating Katarina Srebotnik 6–4, 6–2 in the final.

Seeds
• # Katarina Srebotnik (final)

• # 🇦🇺 Jelena Dokic (champion)

• # Tina Pisnik (semifinals)

• # 🇦🇺 Evie Dominikovic (semifinals)

• # 🇦🇷 Erica Krauth (first round)

• # 🇷🇺 Nadia Petrova (quarterfinals)

• # Wynne Prakusya (second round)

• # 🇺🇸 Jackie Trail (quarterfinals)

• # Tina Hergold (second round)

• # 🇦🇷 Clarisa Fernández (second round)

• # 🇻🇪 Milagros Sequera (first round)

• # 🇧🇪 Kim Clijsters (second round)

• # 🇸🇰 Gabriela Voleková (third round)

• # 🇫🇷 Kildine Chevalier (third round)

• # (n/a)

• # 🇸🇰 Daniela Hantuchová (second round)