| Date: | 3–8 January 2011 |
| Edition: | 19th |
| Category: | ATP World Tour 250 series |
| Prize Money: | $1,024,000 |
| Draw: | 32S / 16D |
| Surface: | Hard / outdoor |
| Location: | Doha, Qatar |
| Main Name: | ATP Qatar Open |
| Before Name: | Qatar Open |
| After Name: | Qatar Open |
| Champs: | Roger Federer[1] |
| Champd: |  Marc López / Rafael Nadal[2] |
The 2011 Qatar Open, known as the 2011 Qatar ExxonMobil Open for sponsorship reasons, was a men's tennis tournament played on outdoor hard courts. It was the 19th edition of the Qatar Open, and part of the ATP World Tour 250 series of the 2011 ATP World Tour. It took place at the Khalifa International Tennis Complex in Doha, Qatar, from 3 January through 8 January 2011. Roger Federer won the singles title.
See main article: 2011 Qatar Open – Singles. Roger Federer defeated 
Nikolay Davydenko, 6–3, 6–4
See main article: 2011 Qatar Open – Doubles. Marc López / Rafael Nadal defeated 
Daniele Bracciali / Andreas Seppi, 6–3, 7–6(7–4)
| width=70 | Country | width=175 | Player | Rank1 | Seed |
|---|---|---|---|---|---|
| Spain | Rafael Nadal | 1 | 1 | ||
| Roger Federer | 2 | 2 | |||
 France | Jo-Wilfried Tsonga | 13 | 3 | ||
| Russian Federation | Nikolay Davydenko | 22 | 4 | ||
| Ernests Gulbis | 24 | 5 | |||
 Serbia | Viktor Troicki | 28 | 6 | ||
| Spain | Guillermo García López | 33 | 7 | ||
| Philipp Kohlschreiber | 34 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Qatar Open – Singles qualifying.
