The 1998 St. Petersburg Open was a tennis tournament played on indoor carpet courts at the Petersburg Sports and Concert Complex in Saint Petersburg in Russia and was part of the World Series of the 1998 ATP Tour. The tournament ran from February 9 through February 15, 1998.
Richard Krajicek defeated Marc Rosset 6–4, 7–6(7–5)
- It was Krajicek's 1st title of the year and the 14th of his career.
Nicklas Kulti / Mikael Tillström defeated Marius Barnard / Brent Haygarth 3–6, 6–3, 7–6
- It was Kulti's 1st title of the year and the 8th of his career. It was Tillström's 1st title of the year and the 4th of his career.