| 2009 Tunis Open | |
|---|---|
| Date | April 27 – March 3 |
| Edition | 5th |
| Location | Tunis, Tunisia |
| Champions | |
| Singles | |
 Gastón Gaudio | |
| Doubles | |
| Brian Dabul / Leonardo Mayer | |
The 2009 Tunis Open was a professional tennis tournament played on outdoor red clay courts. It was part of the Tretorn SERIE+ of the 2009 ATP Challenger Tour. It took place in Tunis, Tunisia between April 27 and March 3, 2009.
| Nationality | Player | Ranking* | Seeding |
|---|---|---|---|
 FIN | Jarkko Nieminen | 50 | 1 |
 FRA | Nicolas Devilder | 64 | 2 |
 GER | Björn Phau | 65 | 3 |
 POR | Frederico Gil | 75 | 4 |
| ARG | Diego Junqueira | 77 | 5 |
 ESP | Pablo Andújar | 91 | 6 |
 USA | Wayne Odesnik | 98 | 7 |
| ARG | Leonardo Mayer | 105 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
Gastón Gaudio def. Frederico Gil, 6–2, 1–6, 6–3
Brian Dabul / Leonardo Mayer def. 
Johan Brunström / 
Jean-Julien Rojer, 6–4, 7–6(6)
Gastón Norberto Gaudio is an Argentine retired tennis player. He won eight singles titles and achieved a career-high ATP singles ranking of world No. 5 in April 2005. Gaudio's most significant title win came at the 2004 French Open, where he defeated fellow Argentine Guillermo Coria in five sets in the final.
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