2005 Dutch Open – Singles

Martin Verkerk was the defending champion, but did not participate this year.

Fernando González won the tournament, beating Agustín Calleri in the final, 7–5, 6–3.

Seeds
• # 🇦🇷 Mariano Puerta (quarterfinals)

• # Fernando González (champion)

• # Nicolás Massú (quarterfinals)

• # 🇧🇪 Christophe Rochus (second round)

• # 🇵🇪 Luis Horna (first round)

• # 🇷🇴 Victor Hănescu (second round)

• # 🇪🇸 Óscar Hernández (first round)

• # 🇩🇪 Tomas Behrend (first round)