| Doubles | |
|---|---|
| 1998 St. Petersburg Open | |
| Champions |  Nicklas Kulti Mikael Tillström |
| Runners-up |  Marius Barnard Brent Haygarth |
| Final score | 3–6, 6–3, 7–6 |
Andrei Olhovskiy and Brett Steven were the defending champions but did not compete that year.
Nicklas Kulti and Mikael Tillström won in the final 3–6, 6–3, 7–6 against Marius Barnard and Brent Haygarth.
Martin Damm / Daniel Vacek (first round) Nicklas Kulti / Mikael Tillström (champions)| First round | Quarterfinals | Semifinals | Final | ||||||||||||||||||||||||
| 1 | M Damm D Vacek | 6 | 6 | ||||||||||||||||||||||||
| J-L de Jager R Koenig | 7 | 7 | J-L de Jager R Koenig | 3 | 4 | ||||||||||||||||||||||
 G Grant  M Merklein | 4 | 6 | Q | M Barnard B Haygarth | 6 | 6 | |||||||||||||||||||||
| Q | M Barnard B Haygarth | 6 | 7 | Q | M Barnard B Haygarth | 7 | 6 | ||||||||||||||||||||
D Adams  L Pimek | 6 | 7 |  T Kempers M Oosting | 5 | 4 | ||||||||||||||||||||||
| K Kinnear M Ondruska | 1 | 6 | D Adams L Pimek | 6 | 6 | 6 | |||||||||||||||||||||
| T.J. Middleton S Noteboom | 2 | 4 | T Kempers M Oosting | 3 | 7 | 7 | |||||||||||||||||||||
| T Kempers M Oosting | 6 | 6 | Q | M Barnard B Haygarth | 6 | 3 | 6 | ||||||||||||||||||||
| WC |  Ģ Dzelde  A Tchernenko | 7 | 6 | 4 | N Kulti M Tillström | 3 | 6 | 7 | |||||||||||||||||||
 M Commandeur L Rehmann | 6 | 2 | WC | Ģ Dzelde A Tchernenko | 5 | 0 | |||||||||||||||||||||
D Prinosil  M Rosset | 2 | 6 | 6 | 4 | N Kulti M Tillström | 7 | 6 | ||||||||||||||||||||
| 4 | N Kulti M Tillström | 6 | 3 | 7 | 4 | N Kulti M Tillström | 7 | 1 | 6 | ||||||||||||||||||
 C Brandi F Messori | 3 | 5 | WC |  D Hrbatý T Johansson | 5 | 6 | 3 | ||||||||||||||||||||
| WC | D Hrbatý T Johansson | 6 | 7 | WC | D Hrbatý T Johansson | 7 | 7 | ||||||||||||||||||||
 D Sapsford C Wilkinson | 7 | 7 | D Sapsford C Wilkinson | 5 | 6 | ||||||||||||||||||||||
| WC |  O Delaître F Santoro | 6 | 6 | ||||||||||||||||||||||||
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