The 2011 Aircel Chennai Open was a men's tennis tournament played on outdoor hard courts. It was the 16th edition of the Chennai Open, and part of the 250 series of the 2011 ATP World Tour. It took place at the SDAT Tennis Stadium in Chennai, India, from 3 January through 9 January 2011. Third-seeded Stan Wawrinka won the singles title.
See main article: 2011 Aircel Chennai Open – Singles. Stan Wawrinka defeated 
Xavier Malisse, 7–5, 4–6, 6–1
See main article: 2011 Aircel Chennai Open – Doubles. 
Mahesh Bhupathi / Leander Paes defeated Robin Haase / 
David Martin, 6–2, 6–7(3–7), [10–7]
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Czech Republic | Tomáš Berdych | 6 | 1 | |
| Marin Čilić | 14 | 2 | ||
| Stan Wawrinka | 21 | 3 | ||
 France | Richard Gasquet | 30 | 4 | |
| France | Jérémy Chardy | 45 | 5 | |
 Serbia | Janko Tipsarević | 49 | 6 | |
| Belgium | Xavier Malisse | 60 | 7 | |
| Robin Haase | 65 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Aircel Chennai Open – Singles qualifying.
