The 2011 Slovak Open was a professional tennis tournament played on indoor hard courts.

It was the twelfth and sixth edition of the tournament which was part of the Tretorn SERIE+ of the 2011 ATP Challenger Tour and the 2011 ITF Women's Circuit.

The following players received wildcards into the singles main draw: The following players received entry as a special exempt into the singles main draw: The following players received entry from the qualifying draw: The following players received wildcards into the singles main draw: The following players received entry from the qualifying draw: The following players received entry from a Special Exempt spot: Lukáš Lacko def.

Karolína Plíšková, 7–5, 6–3 Jan Hájek / Lukáš Lacko def.

Lukáš Rosol / David Škoch, 7–5, 7–5 Naomi Broady / Kristina Mladenovic def.