1999 Prokom Polish Open – Singles

The 1999 Orange Prokom Open singles was the singles event of the second edition of the most prestigious women's tennis tournament held in Poland. Henrieta Nagyová was the defending champion, and the sixth seed this year, but she retired 2–6, 1–4 down against Silvija Talaja.

Conchita Martínez won in the final, 6–1, 6–1, against Karina Habšudová, to win her 31st WTA title.

Seeds
• # 🇪🇸 Arantxa Sánchez Vicario (second round)

• # 🇫🇷 Sandrine Testud (semifinals)

• # 🇪🇸 Conchita Martínez (champion)

• # 🇧🇾 Natasha Zvereva (second round)

• # 🇮🇹 Silvia Farina (second round)

• # 🇸🇰 Henrieta Nagyová (second round, retired)

• # 🇮🇱 Anna Smashnova (first round)

• # 🇪🇸 Gala León García (quarterfinals)

Seeds
• # 🇦🇺 Alicia Molik (first round)

• # Sandra Naćuk (Qualifier)

• # 🇨🇿 Sandra Kleinová (second round)

• # 🇷🇴 Cătălina Cristea (qualifying competition)

• # 🇸🇰 Ľudmila Cervanová (Qualifier)

• # 🇷🇴 Raluca Sandu (first round)

• # 🇸🇰 Katarína Studeníková (second round)

• # 🇨🇿 Lenka Němečková (second round, retired)

Qualifiers
• # 🇪🇸 Eva Bes

• # Jelena Kostanić

• # 🇸🇰 Ľudmila Cervanová

• # Sandra Naćuk