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. It took place in Bratislava, Slovakia between 14 and 20 November 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Poland | Łukasz Kubot | 60 | 1 | |
 Ukraine | Sergiy Stakhovsky | 63 | 2 | |
 Uzbekistan | Denis Istomin | 73 | 3 | |
 Czech Republic | Lukáš Rosol | 78 | 4 | |
 Australia | Matthew Ebden | 82 | 5 | |
 France | Adrian Mannarino | 85 | 6 | |
| Michael Berrer | 104 | 7 | ||
| France | Stéphane Robert | 105 | 8 |
The following players received wildcards into the singles main draw:
Filip Horanský Jozef Kovalík Andrej Martin Jiří VeselýThe following players received entry as a special exempt into the singles main draw:
The following players received entry from the qualifying draw:
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Ukraine | Lesia Tsurenko | 120 | 1 | |
| Elitsa Kostova | 148 | 2 | ||
 Hungary | Tímea Babos | 153 | 3 | |
| Czech Republic | Sandra Záhlavová | 154 | 4 | |
| Czech Republic | Karolína Plíšková | 159 | 5 | |
| Hungary | Réka-Luca Jani | 162 | 6 | |
 Israel | Julia Glushko | 165 | 7 | |
| Czech Republic | Kristýna Plíšková | 179 | 8 |
The following players received wildcards into the singles main draw:
Lucia Butkovská Barbora Krejčíková Paulína Petrisková Anna Karolína SchmiedlováThe following players received entry from the qualifying draw:
Daria Gavrilova Michaela Hončová Lyudmyla Kichenok Nadiia Kichenok Zuzana Luknárová
Nicole Rottmann
Andreea VăideanuThe following players received entry from a Special Exempt spot:
See main article: 2011 Slovak Open – Men's singles. Lukáš Lacko def. 
Ričardas Berankis, 7–6(9–7), 6–2
See main article: 2011 Slovak Open – Women's singles. Lesia Tsurenko def. Karolína Plíšková, 7–5, 6–3
See main article: 2011 Slovak Open – Men's doubles. Jan Hájek / Lukáš Lacko def. Lukáš Rosol / David Škoch, 7–5, 7–5
See main article: 2011 Slovak Open – Women's doubles. 
Naomi Broady / Kristina Mladenovic def. Karolína Plíšková / Kristýna Plíšková, 5–7, 6–4, [10–2]
