1999 Betty Barclay Cup – Singles

The 1999 Betty Barclay Cup singles was the singles event of the fifteenth edition of the Betty Barclay Cup, a WTA Tier II tournament held in Hamburg, Germany and part of the European claycourt season. Martina Hingis was the defending champion but she did not compete that year.

Venus Williams won in the final 6–0, 6–3 against Mary Pierce.

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

• # 🇨🇿 Jana Novotná (quarterfinals)

• # 🇺🇸 Venus Williams (champion)

• # 🇪🇸 Arantxa Sánchez Vicario (semifinals)

• # 🇫🇷 Mary Pierce (final)

• # 🇫🇷 Nathalie Tauziat (second round)

• # 🇧🇪 Dominique Van Roost (second round)

• # Amanda Coetzer (quarterfinals)

• # 🇪🇸 Conchita Martínez (quarterfinals)

Seeds
• # 🇨🇦 Maureen Drake (second round)

• # 🇷🇺 Tatiana Panova (second round)

• # 🇨🇿 Květa Hrdličková (qualifying competition)

• # 🇩🇪 Elena Wagner (first round)

• # 🇮🇹 Laura Golarsa (first round)

• # Seda Noorlander (second round)

• # 🇨🇦 Jana Nejedly (Qualifier)

• # Larisa Neiland (second round)

Qualifiers
• # 🇩🇪 Anca Barna

• # 🇷🇺 Elena Dementieva

• # 🇨🇦 Jana Nejedly

• # 🇦🇹 Marion Maruska