2005 Open 13 – Singles

Joachim Johansson defeated Ivan Ljubičić 7–5, 6–4 to win the 2005 Open 13 singles competition. Dominik Hrbatý was the defending champion.

Seeds

 * 1) 🇦🇷 Guillermo Coria (first round)
 * 2) 🇦🇷 David Nalbandian (second round)
 * 3) 🇸🇪 Joachim Johansson (champion)
 * 4) 🇷🇺 Nikolay Davydenko (first round)
 * 5) 🇸🇰 Dominik Hrbatý (first round)
 * 6) 🇪🇸 Feliciano López (semifinals)
 * 7) 🇩🇪 Nicolas Kiefer (first round)
 * 8)  Ivan Ljubičić (final)