2003 International Raiffeisen Grand Prix
| 2003 International Raiffeisen Grand Prix | |
|---|---|
| Date | May 19 – May 25 |
| Edition | 23rd |
| Category | International Series |
| Surface | Clay / Outdoor |
| Location | Sankt Pölten, Austria |
| Champions | |
| Singles | |
 Andy Roddick | |
| Doubles | |
 Simon Aspelin /  Massimo Bertolini | |
The 2003 International Raiffeisen Grand Prix was a tennis tournament played on outdoor clay courts in Sankt Pölten in Austria and was part of the International Series of the 2003 ATP Tour. The tournament ran from May 19 through May 25, 2003. Andy Roddick won the singles title.
Winners
Men's Singles
Andy Roddick defeated 
Nikolay Davydenko 6–3, 6–2
- It was Roddick's 1st title of the year and the 8th of his career.
Men's Doubles
Simon Aspelin / Massimo Bertolini defeated 
Sargis Sargsian / 
Nenad Zimonjić 6–4, 6–7(8–10), 6–3
- It was Aspelin's 1st title of the year and the 2nd of his career. It was Bertolini's 1st title of the year and the 1st of his career.