The 1999 Betty Barclay Cup was a women's tennis tournament played on outdoor clay courts at the Am Rothenbaum in Hamburg in Germany that was part of Tier II of the 1999 WTA Tour. The tournament was held from 26 April through 2 May 1999. Second-seeded Venus Williams won the singles title.

Entrants

Seeds

Other entrants

The following players received wildcards into the singles main draw: The following players received wildcards into the doubles main draw: The following players received entry from the singles qualifying draw: The following players received entry from the doubles qualifying draw:

Finals

Singles

🇺🇸 Venus Williams defeated 🇫🇷 Mary Pierce, 6–0, 6–3

Doubles

Larisa Neiland / 🇪🇸 Arantxa Sánchez Vicario defeated Amanda Coetzer / 🇨🇿 Jana Novotná, 6–2, 6–1