2004 Australian Open

Roger Federer[1] defeated Marat Safin, 7–6^(7–3), 6–4, 6–2

• It was Federer's 1st title of the year, and his 12th overall. It was his 2nd career Grand Slam title, and his 1st Australian Open title.

Justine Henin-Hardenne[2] defeated Kim Clijsters, 6–3, 4–6, 6–3

• It was Henin-Hardenne's 2nd title of the year, and her 16th overall. It was her 3rd career Grand Slam title, and her 1st Australian Open title.

Michaël Llodra / Fabrice Santoro defeated Bob Bryan / Mike Bryan, 7–6^(7–4), 6–3

• It was Llodra's 2nd career Grand Slam doubles title and his 2nd (consecutive) at the Australian Open.
• It was Santoro's 2nd career Grand Slam doubles title and his 2nd (consecutive) at the Australian Open.

Virginia Ruano / Paola Suárez defeated Svetlana Kuznetsova / Elena Likhovtseva, 6–4, 6–3

Elena Bovina / Nenad Zimonjić defeated Martina Navratilova / Leander Paes, 6–1, 7–6^(7–3)

• It was Bovina's 1st career Grand Slam mixed doubles title.
• It was Zimonjić's 1st career Grand Slam mixed doubles title.

Gaël Monfils defeated Josselin Ouanna, 6–0, 6–3

Shahar Pe'er defeated Nicole Vaidišová, 6–1, 6–4

Scott Oudsema / Brendan Evans defeated David Galić / David Jeflea, 6–1, 6–1

Chan Yung-jan / Sun Shengnan defeated Veronika Chvojková / Nicole Vaidišová, 7–5, 6–3

David Hall defeated Robin Ammerlaan, 6–4, 7–5

Esther Vergeer defeated Daniela di Toro, 4–6, 6–3, 6–1

Robin Ammerlaan / Martin Legner defeated Tadeusz Kruszelnicki / Satoshi Saida, 6–3, 6–3

Maaike Smit / Esther Vergeer defeated Sonja Peters / Sharon Walraven, 6–3, 7–6(3)