The 2009 American Express – TED open was a professional tennis tournament played on outdoor hard courts. It was part of the 2009 ATP Challenger Tour. It took place in Istanbul, Turkey between 10 and 16 August 2009.
| Nationality | Player | Ranking* | Seeding | |
|---|---|---|---|---|
| Frederico Gil | 88 | 1 | ||
 Slovakia | Karol Beck | 100 | 2 | |
| Roko Karanušić | 119 | 3 | ||
| Florian Mayer | 130 | 4 | ||
| Daniel Brands | 131 | 5 | ||
| Blaž Kavčič | 132 | 6 | ||
 France | Nicolas Mahut | 135 | 7 | |
 Austria | Stefan Koubek | 148 | 8 |
The following players received wildcards into the singles main draw:
Haluk Akkoyun Korhan Ural Ateş Tugay KöylüThe following players received entry from the qualifying draw:
See main article: 2009 American Express – TED Open – Singles. 
Illya Marchenko def. Florian Mayer, 6–4, 6–4
See main article: 2009 American Express – TED Open – Doubles. Frederico Gil / 
Filip Prpic def. Grigor Dimitrov / Marsel İlhan, 3–6, 6–2, [10–6]