The 2004 St. Petersburg Open was a tennis tournament played on indoor hard courts at the Petersburg Sports and Concert Complex in Saint Petersburg in Russia and was part of the International Series of the 2004 ATP Tour. It was the 10th edition of the tournament wand was held from October 25 through October 31, 2004.
See main article: 2004 St. Petersburg Open – Singles. 
Mikhail Youzhny defeated 
Karol Beck 6–2, 6–2
See main article: 2004 St. Petersburg Open – Doubles. 
Arnaud Clément / Michaël Llodra defeated Dominik Hrbatý / 
Jaroslav Levinský 6–3, 6–2