The 2011 Türk Telecom İzmir Cup was a professional tennis tournament played on hard courts. It was the fourth edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in İzmir, Turkey between 19 and 25 September 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Turkey | Marsel İlhan | 89 | 1 | |
 Belgium | Steve Darcis | 93 | 2 | |
 Italy | Flavio Cipolla | 102 | 3 | |
| Belgium | Ruben Bemelmans | 148 | 4 | |
 Slovakia | Lukáš Lacko | 151 | 5 | |
 Tunisia | Malek Jaziri | 154 | 6 | |
 Lithuania | Ričardas Berankis | 157 | 7 | |
 Ukraine | Sergey Bubka | 166 | 8 |
The following players received wildcards into the singles main draw:
Haluk Akkoyun Durukan Durmus Muhammet Haylaz Efe YurtacanThe following players received entry from the qualifying draw:
Ervand Gasparyan
James McGee
Mohamed SafwatThe following players received entry as a lucky loser into the singles main draw:
See main article: 2011 Türk Telecom İzmir Cup – Singles. Lukáš Lacko def. Marsel İlhan, 6–4, 6–3
See main article: 2011 Türk Telecom İzmir Cup – Doubles. 
Travis Rettenmaier / Simon Stadler def. Flavio Cipolla / Thomas Fabbiano, 6–0, 6–2