The 2011 Astana Cup was a professional tennis tournament played on hard courts. It was the second edition of the tournament which was part of the 2011 ATP Challenger Tour. It took place in Astana, Kazakhstan between 22 and 28 August 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Rainer Schüttler | 125 | 1 | ||
 Russian Federation | Teymuraz Gabashvili | 129 | 2 | |
| Russian Federation | Alexander Kudryavtsev | 161 | 3 | |
| Russian Federation | Konstantin Kravchuk | 171 | 4 | |
 Slovakia | Andrej Martin | 249 | 5 | |
| Raven Klaasen | 256 | 6 | ||
 Moldova, Republic of | Radu Albot | 267 | 7 | |
 France | Fabrice Martin | 289 | 8 |
The following players received wildcards into the singles main draw:
Karan Rastogi
Anton Saranchukov Serizhan Yessenbekov Denis YevseyevThe following players received entry from the qualifying draw:
See main article: 2011 Astana Cup – Singles. Rainer Schüttler def. Teymuraz Gabashvili, 7–6(8–6), 4–6, 6–4
See main article: 2011 Astana Cup – Doubles. Karan Rastogi / Vishnu Vardhan def. 
Harri Heliövaara / 
Denys Molchanov, 7–6(7–3), 2–6, [10–8]
