2004 If Stockholm Open – Singles

Mardy Fish was the defending champion, but did not participate this year.

Thomas Johansson won the singles event at the 2004 If Stockholm Open tennis tournament, beating Andre Agassi in the final, 3–6, 6–3, 7–6(7–4).

Seeds
• # 🇺🇸 Andre Agassi (final)

• # 🇸🇪 Joachim Johansson (quarterfinals, retired)

• # Andrei Pavel (quarterfinals)

• # 🇩🇪 Tommy Haas (semifinals)

• # 🇪🇸 Feliciano López (second round)

• # 🇸🇪 Robin Söderling (second round)

• # 🇨🇿 Tomáš Berdych (first round)

• # 🇪🇸 Fernando Verdasco (quarterfinals)