2003 Gerry Weber Open

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.

Singles
Roger Federer defeated 🇩🇪 Nicolas Kiefer 6–1, 6–3
 * It was Federer's 4th singles title of the year and the 8th of his career.

Doubles
🇸🇪 Jonas Björkman / 🇦🇺 Todd Woodbridge defeated 🇨🇿 Martin Damm / 🇨🇿 Cyril Suk 6–3, 6–4
 * It was Björkman's 1st title of the year and the 35th of his career. It was Woodbridge's 1st title of the year and the 77th of his career.