2017 Australian Open – Women's singles
| Women's singles | |
|---|---|
| 2017 Australian Open | |
| Champion | Serena Williams |
| Runner-up | Venus Williams |
| Score | 6–4, 6–4 |
| Draw | 128 (12 Q / 8 WC ) |
| Seeds | 32 |
Serena Williams defeated her sister Venus Williams in the final, 6–4, 6–4 to win the women's singles tennis title at the 2017 Australian Open. It was her seventh Australian Open singles title and her 23rd and last major singles title overall, surpassing Steffi Graf's Open Era record for women's singles major titles. Serena did not lose a set during the tournament. This marked the Williams sisters' ninth and last meeting in a major final. With the win, Serena regained the world No. 1 singles ranking, and remains the oldest woman in the Open Era to win a singles major, aged 35 years and four months. Serena was roughly eight-weeks pregnant with her first daughter, Alexis Olympia Ohanian Jr., by the end of the tournament. It was Venus' first major final since the 2009 Wimbledon Championships.
Angelique Kerber was the defending champion, but lost in the fourth round to CoCo Vandeweghe.
Mirjana Lučić-Baroni reached her second major semifinal over 17 years after her first, at the 1999 Wimbledon Championships.