The 2004 If Stockholm Open was an ATP tennis tournament played on hard courts and held in Stockholm, Sweden. It was the 36th edition of the event and part of the ATP International Series of the 2004 ATP Tour. The tournament was held from October 25 through October 31, 2004.
Thomas Johansson defeated Andre Agassi, 3–6, 6–3, 7–6(7–4)
Feliciano López / Fernando Verdasco defeated Wayne Arthurs / Paul Hanley, 6–4, 6–4