The 2003 BMW Open was a men's tennis tournament played on outdoor clay courts in Munich, Germany and was part of the International Series of the 2003 ATP Tour.

The tournament ran from 28 April through 4 May 2003.

First-seeded Roger Federer won the singles title.

Roger Federer defeated Jarkko Nieminen 6–1, 6–4 Wayne Black / Kevin Ullyett defeated Joshua Eagle / Jared Palmer 6–3, 7–5