Serena and Venus Williams defeated Daniela Hantuchová and Ai Sugiyama in the final, 6–3, 6–3 to win the women's doubles tennis title at the 2009 Australian Open. It was their third Australian Open doubles title together and eighth major title together overall. Alona Bondarenko and Kateryna Bondarenko were the defending champions, but were defeated in the first round by Gisela Dulko and Roberta Vinci.

Seeds

• # Cara Black / 🇺🇸 Liezel Huber (quarterfinals) • # 🇪🇸 Anabel Medina Garrigues / 🇪🇸 Virginia Ruano Pascual (third round) • # 🇨🇿 Květa Peschke / 🇺🇸 Lisa Raymond (third round) • # 🇺🇦 Alona Bondarenko / 🇺🇦 Kateryna Bondarenko (first round) • # 🇦🇺 Samantha Stosur / 🇦🇺 Rennae Stubbs (third round) • # 🇨🇳 Yan Zi / 🇨🇳 Zheng Jie (third round) • # 🇷🇺 Maria Kirilenko / 🇮🇹 Flavia Pennetta (third round, withdrew) • # Chuang Chia-jung / 🇨🇳 Sun Tiantian (first round) • # 🇸🇰 Daniela Hantuchová / 🇯🇵 Ai Sugiyama (final) • # 🇺🇸 Serena Williams / 🇺🇸 Venus Williams (champions) • # 🇪🇸 Nuria Llagostera Vives / 🇪🇸 María José Martínez Sánchez (quarterfinals) • # 🇦🇺 Casey Dellacqua / 🇮🇹 Francesca Schiavone (semifinals) • # 🇧🇾 Victoria Azarenka / 🇷🇺 Vera Zvonareva (third round, withdrew) • # Sorana Cîrstea / Monica Niculescu (second round) • # 🇧🇾 Tatiana Poutchek / 🇷🇺 Anastasia Rodionova (second round) • # Hsieh Su-wei / 🇨🇳 Peng Shuai (quarterfinals)

Draw

Finals

Top half

Section 1

Section 2

Bottom half

Section 3

Section 4