The 2011 Brussels Open (also known as the Brussels Open by GDF Suez for sponsor reasons) was a women's tennis tournament played on outdoor clay courts. It was the first edition of the Brussels Open, and was part of the Premier-level tournaments of the 2011 WTA Tour. The event took place at the Royal Primerose Tennis Club in Brussels, Belgium, from 14 May until 21 May 2011. First-seeded Caroline Wozniacki won the singles title.
See main article: 2011 Brussels Open – Singles. Caroline Wozniacki defeated 
Peng Shuai 2–6, 6–3, 6–3
See main article: 2011 Brussels Open – Doubles. 
Andrea Hlaváčková / 
Galina Voskoboeva defeated 
Klaudia Jans / Alicja Rosolska 3–6, 6–0, [10–5]
| Stage | Singles' Prize Money[1] | Points | Doubles' Prize Money | |
|---|---|---|---|---|
| Champion | $ 103,000 | 470 | $ 32,000 | |
| Runner-up | $ 55,000 | 320 | $ 17,000 | |
| Semifinals | $ 29,500 | 200 | $ 9,250 | |
| Quarterfinals | $ 15,675 | 120 | $ 4,850 | |
| Round of 16 | $ 8,500 | 60 | $ 2,600 | |
| Round of 32 | $ 4,650 | 1 | rowspan=5 | - |
| Qualifier | - | 20 | ||
| Final round qualifying | $ 2,500 | 12 | ||
| Second round qualifying | $ 1,350 | 8 | ||
| First round qualifying | $ 725 | 1 |
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Caroline Wozniacki | 1 | 1 | ||
 Russian Federation | Vera Zvonareva | 3 | 2 | |
 Italy | Francesca Schiavone | 5 | 3 | |
 Serbia | Jelena Janković | 9 | 4 | |
 Israel | Shahar Pe'er | 14 | 5 | |
 Belgium | Yanina Wickmayer | 24 | 6 | |
 Romania | Alexandra Dulgheru | 29 | 7 | |
| China | Peng Shuai | 31 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
See main article: 2011 Brussels Open – Singles qualifying.
The following players received entry from a lucky loser spot:
