The 2011 Poznań Porsche Open powered by Enea was a professional tennis tournament played on clay courts. It was the eight edition of the tournament which was part of the 2011 ATP Challenger Tour and the Tretorn SERIE+ tour. It took place at the Park Tenisowy Olimpia in Poznań, Poland from 16 to 24 July 2011, including the qualifying competition in the first two days.

The following players received wildcards into the singles main draw:

The following players received entry from the qualifying draw:

Rui Machado def. Jerzy Janowicz, 6–3, 6–3

Olivier Charroin / Stéphane Robert def. Franco Ferreiro / André Sá, 6–2, 6–3