At the French Open, she reached the third round for the fourth time in five years, but lost to world No. 1, Victoria Azarenka. She was eliminated in the second round at Wimbledon by world No. 27, Zheng Jie. Wozniak qualified for the Summer Olympics in London, but lost to Venus Williams in the second round. At the Rogers Cup, she reached the quarterfinals at a Premier 5 tournament for the first time of her career, where she lost to Caroline Wozniacki. She became the first Canadian in 20 years (since Patricia Hy-Boulais in 1992) to reach the quarterfinals there. Wozniak lost in the second round of the US Open to world No. 17, Lucie Šafářová.