The 2011 BRD Năstase Țiriac Trophy was a tennis tournament played on outdoor clay courts. It was the 19th edition of the BRD Năstase Țiriac Trophy tournament, and was part of the ATP World Tour 250 Series of the 2011 ATP World Tour. It was held in Bucharest, Romania, 17–23 September 2011.
| Country | Player | Rank1 | Seed | |
|---|---|---|---|---|
 Argentina | Juan Ignacio Chela | 23 | 1 | |
| Florian Mayer | 24 | 2 | ||
 Spain | Marcel Granollers | 30 | 3 | |
| Spain | Pablo Andújar | 43 | 4 | |
| Spain | Tommy Robredo | 44 | 5 | |
 Italy | Potito Starace | 50 | 6 | |
| Italy | Andreas Seppi | 51 | 7 | |
| Spain | Albert Montañés | 54 | 8 |
The following players received wildcards into the singles main draw:
The following players received entry from the qualifying draw:
See main article: 2011 BRD Năstase Țiriac Trophy – Singles. Florian Mayer defeated Pablo Andújar, 6–3, 6–1
See main article: 2011 BRD Năstase Țiriac Trophy – Doubles. Daniele Bracciali / Potito Starace defeated 
Julian Knowle / David Marrero, 3–6, 6–4, [10–8].
