2011 Australian Open
- Australian Open
- French Open
- Wimbledon Championships
- U.S. Open
The 99th Australian Open was a tennis hard court tournament Class Grand Slam, which was organized by the ITF. It was held from 17 to 30 January 2011 in Melbourne, Australia.
Defender of the single were Roger Federer in the men's and Serena Williams in the women. In men's doubles, the twin brothers Bob and Mike Bryan, the sisters Serena and Venus Williams were in women's doubles, the defending champion. Cara Black and Leander Paes were the defending champions in the mixed doubles.
- 2.1 seedings
- 3.1 seedings
- 4.1 seedings
- 5.1 seedings