The 2011 MercedesCup was a men's tennis tournament played on outdoor clay courts.

It was the 34th edition of the Stuttgart Open, and was part of the ATP World Tour 250 series of the 2011 ATP World Tour.

Unseeded Juan Carlos Ferrero won the singles title.

The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry to the main draw as lucky loser: Juan Carlos Ferrero defeated Pablo Andújar, 6–4, 6–0.

Jürgen Melzer / Philipp Petzschner defeated Marcel Granollers / Marc López, 6–3, 6–4.