The 2011 New Haven Open at Yale was a women's tennis tournament played on outdoor hard courts. It was the 43rd edition of the New Haven Open at Yale, and was part of the Premier Series of the 2011 WTA Tour. It was previously known as "Pilot Pen Tennis". It took place at the Cullman-Heyman Tennis Center in New Haven, Connecticut, United States, from August 22 through August 27, 2011. It was the last event on the 2011 US Open Series before the 2011 US Open.
| Country | Player | Ranking* | Seed | |
|---|---|---|---|---|
| 1 | 1 | |||
 China | Li Na | 5 | 2 | |
 Italy | 8 | 3 | ||
 France | 9 | 4 | ||
 Poland | 12 | 5 | ||
 Russian Federation | Svetlana Kuznetsova | 13 | 6 | |
 Serbia | 14 | 7 | ||
| Russian Federation | 18 | 8 |
The following players received wildcards into the singles main draw
The following players received entry from the qualifying draw:
See main article: 2011 New Haven Open at Yale – Singles qualifying.
The following players received entry from a lucky loser spot:
See main article: 2011 New Haven Open at Yale – Singles. Caroline Wozniacki defeated 
Petra Cetkovská, 6–4, 6–1
See main article: 2011 New Haven Open at Yale – Doubles. Chuang Chia-jung / 
Olga Govortsova defeated Sara Errani / Roberta Vinci, 7–5, 6–2
On August 23, 2011, 1:51 PM local time[1] a 5.8 magnitude earthquake in Virginia stopped play for two hours[2] while the main stadium was checked for damage by the fire department.
