2005 Australian Open – Women's singles

Serena Williams defeated Lindsay Davenport in the final, 2–6, 6–3, 6–0 to win the women's singles tennis title at the 2005 Australian Open. It was her second Australian Open singles title and her seventh major singles title overall. Williams saved three match points en route to the title, in the semifinals against Maria Sharapova.

Justine Henin-Hardenne was the reigning champion, but did not compete this year due to a knee injury.

This event marked the first major appearances for future world No. 1 and major champion Ana Ivanovic and two-time major champion Li Na. Both reached the third round before losing to Amélie Mauresmo and Sharapova, respectively.

Seeds
• # 🇺🇸 Lindsay Davenport (final)

• # 🇫🇷 Amélie Mauresmo (quarterfinals)

• # 🇷🇺 Anastasia Myskina (fourth round)

• # 🇷🇺 Maria Sharapova (semifinals)

• # 🇷🇺 Svetlana Kuznetsova (quarterfinals)

• # 🇷🇺 Elena Dementieva (fourth round)

• # 🇺🇸 Serena Williams (champion)

• # 🇺🇸 Venus Williams (fourth round)

• # 🇷🇺 Vera Zvonareva (second round)

• # 🇦🇺 Alicia Molik (quarterfinals)

• # 🇷🇺 Nadia Petrova (fourth round)

• # Patty Schnyder (quarterfinals)

• # Karolina Šprem (fourth round)

• # 🇮🇹 Francesca Schiavone (third round)

• # 🇮🇹 Silvia Farina Elia (fourth round)

• # 🇯🇵 Ai Sugiyama (first round)

• # 🇨🇴 Fabiola Zuluaga (second round)

• # 🇷🇺 Elena Likhovtseva (third round)

• # 🇫🇷 Nathalie Dechy (semifinals)

• # 🇫🇷 Tatiana Golovin (second round)

• # 🇺🇸 Amy Frazier (third round)

• # 🇧🇬 Magdalena Maleeva (third round)

• # Jelena Janković (second round)

• # 🇫🇷 Mary Pierce (first round)

• # 🇺🇸 Lisa Raymond (third Round, withdrew)

• # 🇸🇰 Daniela Hantuchová (third round)

• # 🇮🇱 Anna Smashnova (third round)

• # 🇯🇵 Shinobu Asagoe (second round)

• # 🇦🇷 Gisela Dulko (second round)

• # 🇮🇹 Flavia Pennetta (first round)

• # Jelena Kostanić (second round)

• # 🇨🇿 Iveta Benešová (first round)

Wild cards
• 🇦🇺 Monique Adamczak

• 🇦🇺 Casey Dellacqua

• 🇦🇺 Evie Dominikovic

• 🇦🇺 Sophie Ferguson

• 🇮🇳 Sania Mirza

• 🇫🇷 Capucine Rousseau

• 🇦🇺 Cindy Watson

• 🇦🇺 Tiffany Welford

Qualifiers
• 🇬🇧 Elena Baltacha

• 🇭🇺 Zsófia Gubacsi

• 🇺🇸 Angela Haynes

• 🇧🇬 Sesil Karatantcheva

• 🇺🇸 Jessica Kirkland

• Michaëlla Krajicek

• 🇨🇳 Li Ting

• 🇨🇳 Liu Nannan

• 🇯🇵 Aiko Nakamura

• 🇨🇿 Zuzana Ondrášková

• 🇺🇸 Meilen Tu

• 🇧🇾 Anastasia Yakimova

Withdrawals
• 🇷🇺 Elena Bovina → replaced by Silvija Talaja

• 🇺🇸 Jennifer Capriati → replaced by 🇮🇱 Tzipora Obziler

• 🇧🇪 Kim Clijsters → replaced by 🇨🇴 Catalina Castaño

• 🇮🇹 Rita Grande → replaced by 🇫🇷 Camille Pin

• 🇧🇪 Justine Henin-Hardenne → replaced by 🇺🇦 Alona Bondarenko

• 🇺🇸 Shenay Perry → replaced by 🇯🇵 Saori Obata

• 🇺🇸 Chanda Rubin → replaced by 🇹🇳 Selima Sfar

• 🇦🇷 Paola Suárez → replaced by 🇫🇷 Stéphanie Cohen-Aloro