1999 Open Gaz de France – Singles

The 1999 Open Gaz de France singles was the singles event of the seventh edition of the Open GDF Suez; a WTA Tier II tournament held in Paris, France. Mary Pierce was the defending champion but did not compete that year.

Serena Williams won in the final 6–2, 3–6, 7–6(7–4) against Amélie Mauresmo. It was her first career singles title.

Seeds
The top four seeds received a bye to the second round.

• # Martina Hingis (quarterfinals)

• # 🇫🇷 Nathalie Tauziat (second round)

• # 🇧🇪 Dominique Van Roost (semifinals)

• # Irina Spîrlea (second round)

• # 🇫🇷 Sandrine Testud (first round)

• # 🇫🇷 Amélie Mauresmo (final)

• # 🇫🇷 Julie Halard-Decugis (quarterfinals)

• # 🇷🇺 Elena Likhovtseva (quarterfinals)

Seeds
• # Miriam Oremans (first round)

• # 🇸🇰 Karina Habšudová (Qualifier)

• # 🇫🇷 Anne-Gaëlle Sidot (Qualifier)

• # 🇻🇪 María Vento (moved to main draw)

• # 🇧🇪 Els Callens (first round)

• # 🇨🇦 Maureen Drake (second round)

• # Larisa Neiland (first round, retired)

• # Silvija Talaja (first round)

Qualifiers
• # 🇸🇪 Åsa Carlsson

• # 🇫🇷 Anne-Gaëlle Sidot

• # Sandra Naćuk

• # 🇸🇰 Karina Habšudová

Lucky losers
• # 🇧🇪 Laurence Courtois

• # 🇫🇷 Laurence Andretto

• # 🇨🇿 Sandra Kleinová