| 2003 Gerry Weber Open | |
|---|---|
| Date | 9–15 June |
| Edition | 11th |
| Category | International Series |
| Draw | 32S / 16D |
| Prize money | $775,000 |
| Surface | Grass / outdoor |
| Location | Halle, Germany |
| Venue | Gerry Weber Stadion |
| Champions | |
| Singles | |
 Roger Federer[1] | |
| Doubles | |
 Jonas Björkman /  Todd Woodbridge[2] | |
The 2003 Gerry Weber Open was a men's tennis tournament played on grass courts at the Gerry Weber Stadion in Halle, North Rhine-Westphalia in Germany that was part of the International Series of the 2003 ATP Tour. It was the 11th edition of the tournament and was held from 9 June until 15 June 2003. First-seeded Roger Federer won the singles title.
- ^ "2003 Halle – Singles draw". Association of Tennis Professionals (ATP).
- ^ "2003 Halle – Doubles draw". Association of Tennis Professionals (ATP).