The 2003 Gerry Weber Open was a tennis tournament played on grass courts at the Gerry Weber Stadion in Halle, North Rhine-Westphalia in Germany and was part of the International Series of the 2003 ATP Tour. The tournament ran from June 9 through June 15, 2003.
Roger Federer defeated Nicolas Kiefer 6–1, 6–3
- It was Federer's 5th title of the year and the 13th of his career.
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.