1999 ATP German Open – Singles

Marcelo Ríos defeated Mariano Zabaleta in the final, 6–7(5–7), 7–5, 5–7, 7–6(7–5), 6–2 to win the singles tennis title at the 1999 Hamburg European Open.

Albert Costa was the defending champion, but was defeated in the second round by Zabaleta.

Seeds
A champion seed is indicated in bold text while text in italics indicates the round in which that seed was eliminated. The top eight seeds received a bye into the second round. • # Richard Krajicek (second round)

• #🇪🇸 Carlos Moyà (semifinals)

• #🇬🇧 Tim Henman (quarterfinals)

• # Marcelo Ríos (champion)

• #🇬🇧 Greg Rusedski (second round)

• #🇪🇸 Álbert Costa (second round)

• #🇪🇸 Félix Mantilla (second round)

• #🇧🇷 Gustavo Kuerten (quarterfinals)

• # Goran Ivanišević (first round)

• #🇸🇪 Thomas Johansson (first round)

• #🇩🇪 Tommy Haas (quarterfinals)

• #🇪🇸 Francisco Clavet (third round)

• # Wayne Ferreira (third round)

• #🇫🇷 Cédric Pioline (first round)

• # Marc Rosset (second round)

• #🇷🇺 Marat Safin (second round)