The 2011 Atlanta Tennis Championships was a men's tennis tournament played on outdoor hard courts. It was the 24th edition of the event known that year as the Atlanta Tennis Championships and was part of the ATP World Tour 250 series of the 2011 ATP World Tour. The Atlanta Tennis Championships was the first ATP stop of the 2011 US Open Series. First-seeded Mardy Fish won the singles title.
| Country | width=150 | Player | Ranking* | Seeding |
|---|---|---|---|---|
| Mardy Fish | 9 | 1 | ||
| Kevin Anderson | 35 | 2 | ||
| John Isner | 36 | 3 | ||
 Belgium | Xavier Malisse | 40 | 4 | |
| Grigor Dimitrov | 59 | 5 | ||
 Russian Federation | Igor Kunitsyn | 62 | 6 | |
| Alex Bogomolov Jr. | 63 | 7 | ||
 India | Somdev Devvarman | 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 Atlanta Tennis Championships – Singles qualifying.
See main article: 2011 Atlanta Tennis Championships – Singles. 
Mardy Fish defeated John Isner, 3–6, 7–6(8–6), 6–2.
See main article: 2011 Atlanta Tennis Championships – Doubles. Alex Bogomolov Jr. / 
Matthew Ebden defeated Matthias Bachinger / Frank Moser, 3 - 6, 7 - 5, [10–8].
