The 2003 If Stockholm Open was a men's tennis tournament played on indoor hard courts at the Kungliga tennishallen in Stockholm, Sweden and was part of the International Series of the 2002 ATP Tour. The tournament was held from 20 October through 26 October 2003. Fifth-seeded Mardy Fish won the singles title.
See main article: 2003 If Stockholm Open – Singles. Mardy Fish defeated Robin Söderling 7–5, 3–6, 7–6(7–4)
See main article: 2003 If Stockholm Open – Doubles. Jonas Björkman / Todd Woodbridge defeated Wayne Arthurs / Paul Hanley 6–3, 6–4