The 2005 Australian Open was a Grand Slam tennis tournament held in Melbourne, Australia from 17 until 30 January 2005. Roger Federer was unsuccessful in defending his 2004 title, being defeated in the semi-finals by eventual champion Marat Safin in a rematch of the 2004 final. Safin defeated third-seed Lleyton Hewitt in the final in four sets. Justine Henin-Hardenne could not defend her 2004 title due to an injury suffered in the second half of 2004. Serena Williams, the champion in 2003, defeated Lindsay Davenport in the women's final.
|2005 Australian Open|
|Date||17–30 January 2005|
|Category||Grand Slam (ITF)|
|Surface||Hardcourt (Rebound Ace)|
|Wayne Black / Kevin Ullyett|
|Svetlana Kuznetsova / Alicia Molik|
|Samantha Stosur / Scott Draper|
|Wheelchair men's singles|
|Wheelchair women's singles|
|Wheelchair men's doubles|
|Robin Ammerlaan / Martin Legner|
|Wheelchair women's doubles|
|Maaike Smit / Florence Gravellier|
|Kim Sun-yong / Yi Chu-huan|
|Victoria Azarenka / Marina Erakovic|
|Men's legends doubles|
|Richard Fromberg / Mats Wilander|
|Legends mixed doubles|
|Nicole Bradtke / Roy Emerson|
- It was Safin's 1st title of the year, and his 15th overall. It was his 2nd career Grand Slam title, his 1st Australian Open title and the last championship of his career. Safin became the second Russian player to win the Australian Open men's singles title, following Yevgeny Kafelnikov's victory in 1999.
- It was Williams's 1st title of the year, and her 26th overall. It was her 7th career Grand Slam title, and her 2nd Australian Open title. The final featured a long injury time out for Williams in the second set at 3-3.
- "Serena Williams overcomes rib injury". Retrieved 11 April 2016.
- "Serena outlasts exhausted Davenport". Retrieved 11 April 2016.
- "Australian Open Championship Matches". Philadelphia Daily News. 31 January 2005. p. 76.
- "No Title Defense for Henin-Hardenne". The New York Times. 9 January 2007. Retrieved 7 February 2008.
- "Capriati out of Australian Open". The Age. Melbourne. 12 January 2005. Retrieved 7 February 2009.