Stefano Galvani and Alberto Martín were the defenders of title, but they chose to not participate this year.
James Auckland and Travis Rettenmaier won in the final 7–5, 6–7(6), [10–4], against Dušan Karol and Jaroslav Pospíšil.
Alexandr Dolgopolov was the defending champion, but decided to compete at the 2011 Copa Claro instead.
Jaroslav Pospíšil defeated Guillermo Olaso in the final 6–1, 3–6, 6–3.
Franco Ferreiro and Harsh Mankad were the defending champions but decided not to participate.
The 2011 ATP Challenger Trophy was a professional tennis tournament played on clay courts. It was the fifth edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Trnava, Slovakia between 19 and 25 September 2011.
Jaroslav Pospíšil was the defending champion but lost in the quarterfinals to eventual champion Iñigo Cervantes-Huegun. Spanish qualifier won in the final 6–4, 7–6(7–3), against Pavol Červenák.
Karol Beck and Lukáš Rosol were the defending champions, but decided not to participate.
Colin Ebelthite and Jaroslav Pospíšil won the title, defeating Alexander Bury and Andrei Vasilevski 6–3, 6–4 in the final.
David Marrero and Rubén Ramírez Hidalgo won the first edition of this tournament, defeating Daniel Gimeno-Traver and Morgan Phillips, 6–4, 6–7(8–10), [11–9] in the final.
Diego Junqueira and Brian Dabul were the defending champions but decided not to participate.
Carlos Berlocq and Eduardo Schwank won the title, defeating Marcel Felder and Jaroslav Pospíšil 6–7(1–7), 6–4, [10–7] in the final.
Treat Conrad Huey and Simone Vagnozzi were the defending champions but Huey decided not to participate.
Vagnozzi played alongside Daniel Muñoz-de la Nava.
Adrián Menéndez and Jaroslav Pospíšil won the title after defeating Gerard Granollers and Iván Navarro 6–3, 3–6, [10–8] in the final.
Guillermo Alcaide and Adrián Menéndez were the defending champions. Alcaide did not participate. Menéndez partnered with Jaroslav Pospíšil, losing in the quarterfinals. Walter Trusendi and Matteo Viola won the title defeating Evgeny Donskoy and Andrey Kuznetsov 1–6, 7–6(7–5), [10–3] in the final.
Treat Conrad Huey and Vasek Pospisil were the defending champions but Huey decided not to participate.
Pospisil played alongside Adil Shamasdin, reaching the quarterfinals.
Tomasz Bednarek and Olivier Charroin won the title, defeating Jaan-Frederik Brunken and Stefan Seifert 6–3, 6–2 in the final.
Federico Delbonis and Renzo Olivo were the defending champions but Delbonis decided not to participate.
Olivo played alongside Dane Propoggia.
Philipp Marx and Florin Mergea won the title, defeating Colin Ebelthite and Jaroslav Pospíšil 6–4, 4–6, [10–4] in the final.
Colin Ebelthite and Jaroslav Pospíšil were the defending champions, but lost in the semifinals this year.
Nikola Ćirić and Goran Tošić won the final 7–6(7–0), 7–5 against Mate Pavić and Franko Škugor.
David Marrero and Rubén Ramírez Hidalgo were the defending champions but Marrero decided not to participate.
Hidalgo played alongside Daniel Muñoz de la Nava.
Daniel Gimeno-Traver and Iván Navarro defeated Colin Ebelthite and Jaroslav Pospíšil 6–2, 4–6, [10–7] in the final to win the title.
Marius Copil and Victor Crivoi were the defending champions but Copil decided not to participate.
Crivoi played alongside Patrick Ciorcilă, but lost to Jamie Delgado and Jordan Kerr in the first round.
Adrian Ungur was the defending champion, but lost in the semifinals to Jaroslav Pospíšil.
Juan Martín del Potro was the defending champion but decided not to compete.
Tommy Haas won the title, defeating Robin Haase in the final, 6–3, 4–6, 6–4.
Lukáš Rosol was the defending champion, but lost in the final to Grigor Dimitrov 7–6(7–2), 6–1
Marin Draganja and Mate Pavić were the defending champions, but did not compete this year.
Treat Huey and Dominic Inglot were the defending champions, but Huey decided to compete in Valencia instead. Inglot played alongside Florin Mergea, but lost in the semifinals to Vasek Pospisil and Nenad Zimonjić.
Pospisil and Zimonjić went on to win the title, defeating Marin Draganja and Henri Kontinen in the final, 7–6(15–13), 1–6, [10–5].
