| Date: | 7–13 February |
| Edition: | 39th |
| Category: | ATP World Tour 500 |
| Prize Money: | €1,150,000 |
| Draw: | 32S / 16D |
| Surface: | Hard / indoor |
| Location: | Rotterdam, Netherlands |
| Venue: | Rotterdam Ahoy |
| Champs: |  Robin Söderling[1] |
| Champwcs: | Ronald Vink |
| Champd: |  Jürgen Melzer / Philipp Petzschner[2] |
| Champwcd: | Robin Ammerlaan /  Stéphane Houdet |
The 2011 ABN AMRO World Tennis Tournament was a men's tennis tournament played on indoor hard courts. It was the 38th edition of the event known as the ABN AMRO World Tennis Tournament, and was part of the ATP World Tour 500 series of the 2011 ATP World Tour. It took place at the Rotterdam Ahoy indoor sporting arena in Rotterdam, Netherlands, from February 7 through February 13, 2011. First-seeded Robin Söderling won his second successive singles title.
The field was led by Australian Open finalist Andy Murray, Australian Open semifinalist David Ferrer and defending champion Robin Söderling. Other players included World No. 10 Jürgen Melzer and former top 10 players Ivan Ljubičić, Tommy Robredo, and Mikhail Youzhny.
See main article: 2011 ABN AMRO World Tennis Tournament – Singles. Robin Söderling defeated Jo-Wilfried Tsonga, 6–3, 3–6, 6–3.
See main article: 2011 ABN AMRO World Tennis Tournament – Doubles. Jürgen Melzer / Philipp Petzschner defeated Michaël Llodra / 
Nenad Zimonjić, 6–4, 3–6, [10–5].
See main article: 2011 ABN AMRO World Tennis Tournament – Wheelchair singles. Ronald Vink defeated Stéphane Houdet, 7 - 5, 6 - 1
See main article: 2011 ABN AMRO World Tennis Tournament – Wheelchair doubles. The tournament was played in a round robin format with Robin Ammerlaan and Stéphane Houdet won the league.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
| Sweden | Robin Söderling | 4 | 1 | |
 United Kingdom | Andy Murray | 5 | 2 | |
 Spain | David Ferrer | 6 | 3 | |
 Czech Republic | Tomáš Berdych | 7 | 4 | |
| Austria | Jürgen Melzer | 10 | 5 | |
 Russian Federation | Mikhail Youzhny | 11 | 6 | |
| Ivan Ljubičić | 15 | 7 | ||
| France | Jo-Wilfried Tsonga | 18 | 8 |
The following players received wildcards into the main draw:
The following players received entry from the qualifying draw:
See main article: 2011 ABN AMRO World Tennis Tournament – Singles qualifying.
The following players received entry as a lucky loser into the singles main draw: