Justine Henin-Hardenne defeated Kim Clijsters in the final, 6–3, 4–6, 6–3 to win the women's singles tennis title at the 2004 Australian Open. It was her third major title, and her third win over Clijsters in a major final, after her victory at the 2003 French and US Opens. Clijsters would eventually win the title seven years later.
Justine Henin-Hardenne defeated Kim Clijsters in the final, 7–5, 6–1 to win the women's singles tennis title at the 2003 US Open. She lost only one set during the tournament.
Defending champion Serena Williams successfully defended her title, defeating her sister Venus Williams in a rematch of the previous year's final, 4–6, 6–4, 6–2 to win the ladies' singles tennis title at the 2003 Wimbledon Championships. It was her second Wimbledon singles title and her sixth major singles title overall.
Kim Clijsters and Ai Sugiyama were the defending champions, however Clijsters did not compete.
Kim Clijsters and Ai Sugiyama were the defending champions, but Clijsters chose not to participate. Sugiyama played alongside Liezel Huber, but they lost in the first round to Shinobu Asagoe and Rika Fujiwara.
Lisa Raymond and Rennae Stubbs were the defending champions but they competed with different partners that year, Raymond with Samantha Stosur and Stubbs with Nathalie Dechy.
Serena and Venus Williams were the defending champions, but lost in the third round to Elena Dementieva and Lina Krasnoroutskaya.
Serena Williams and Venus Williams defeated Virginia Ruano Pascual and Paola Suárez in the final, 4–6, 6–4, 6–3 to win the women's doubles tennis title at the 2003 Australian Open.
Kim Clijsters was the defending champion, but withdrew before her third round match against Laura Granville due to a wrist injury which would ultimately sideline her for the remainder of the season.
Serena Williams was the defending champion, but lost in semifinals to Amélie Mauresmo.
Virginia Ruano Pascual and Paola Suárez were the defending champions and won in the final 6–2, 6–3, against Svetlana Kuznetsova and Martina Navratilova in straight sets. This was Ruano Pascual's 4th career Grand Slam doubles title and her 2nd title at the US Open. It was also Suárez' 4th career Grand Slam doubles title and her 2nd title at the US Open.
Nadia Petrova and Meghann Shaughnessy were the defending champions, but lost in quarterfinals to Lisa Raymond and Rennae Stubbs.
Liezel Huber and Magdalena Maleeva were the defending champions, but competed this year with different partners. Huber teamed up with Ai Sugiyama and were eliminated in quarterfinals, while Maleeva teamed up with Katarina Srebotnik and lost in first round.
Virginia Ruano Pascual and Paola Suárez were the defending champions, but lost in quarterfinals to Els Callens and Émilie Loit.
Svetlana Kuznetsova and Martina Navratilova were the defending champions, but Kuznetsova decided not to compete this year. Navratilova teamed up with Lisa Raymond and lost in second round to Elena Likhovtseva and Anastasia Myskina.
Giulia Casoni and Janette Husárová were the reigning champions, but did not compete this year.
Justine Henin-Hardenne was the defending champion and successfully defended her title, by defeating Kim Clijsters 6–4, 4–6, 7–5 in the final.
The doubles tournament for the 2004 Uncle Tobys Hardcourts was won by Russian pair, Svetlana Kuznetsova and Elena Likhovtseva who defeated South African player Liezel Huber and Magdalena Maleeva from Bulgaria 6–3, 6–4 in the final. For Kuznetsova, this was her second Gold Coast title after winning with Martina Navratilova in 2003. This was also Likhovtseva second Gold Coast title after winning the tournament in 1998 with Japanese doubles partner Ai Sugiyama.
Kim Clijsters and Ai Sugiyama were the defending champions, but Clijsters withdrew from the tournament due to a left ankle injury. Sugiyama teamed up with Liezel Huber and lost in the quarterfinals to Dinara Safina and Meghann Shaughnessy.
Venus Williams was the defending champion, but did not compete this year.
Svetlana Kuznetsova 
Martina Navratilova 
Nathalie Dechy 
