The 2003 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 2003 ATP Tour. The tournament ran from October 20 through October 26, 2003.
See main article: 2003 St. Petersburg Open – Singles. Gustavo Kuerten defeated Sargis Sargsian 6–4, 6–3
See main article: 2003 St. Petersburg Open – Doubles. Julian Knowle / Nenad Zimonjić defeated Michael Kohlmann / Rainer Schüttler 7–6(7–1), 6–3