Giải quần vợt Úc Mở rộng 2019
Hạt giống đơn > Đơn nữ

| Hạt giống | Xếp hạng | Tay vợt | Điểm trước thi đấu | Điểm bảo vệ | Điểm giành được | Điểm sau thi đấu | Thực trạng |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 1 |  Simona Halep | 6,642 | 1,300 | 240 | 5,582 | Fourth round lost to  Serena Williams [16] |
| 2 | 2 |  Angelique Kerber | 5,505 | 780 | 240 | 4,965 | Fourth round lost to  Danielle Collins |
| 3 | 3 |  Caroline Wozniacki | 5,436 | 2,000 | 130 | 3,566 | Third round lost to  Maria Sharapova [30] |
| 4 | 4 |  Naomi Osaka | 5,270 | 240 | 2,000 | 7,030 | Champion, defeated  Petra Kvitová [8] |
| 5 | 5 |  Sloane Stephens | 5,077 | 10 | 240 | 5,307 | Fourth round lost to  Anastasia Pavlyuchenkova |
| 6 | 7 |  Elina Svitolina | 4,940 | 430 | 430 | 4,940 | Quarterfinals lost to  Naomi Osaka [4] |
| 7 | 8 |  Karolína Plíšková | 4,750 | 430 | 780 | 5,100 | Semifinals lost to  Naomi Osaka [4] |
| 8 | 6 |  Petra Kvitová | 5,000 | 10 | 1,300 | 6,290 | Runner-up, lost to  Naomi Osaka [4] |
| 9 | 9 |  Kiki Bertens | 4,490 | 130 | 70 | 4,430 | Second round lost to  Anastasia Pavlyuchenkova |
| 10 | 10 |  Daria Kasatkina | 3,415 | 70 | 10 | 3,355 | First round lost to  Timea Bacsinszky [PR] |
| 11 | 11 |  Aryna Sabalenka | 3,365 | 10 | 130 | 3,485 | Third round lost to  Amanda Anisimova |
| 12 | 14 |  Elise Mertens | 2,985 | 780 | 130 | 2,335 | Third round lost to  Madison Keys [17] |
| 13 | 12 |  Anastasija Sevastova | 3,160 | 70 | 240 | 3,330 | Fourth round lost to  Naomi Osaka [4] |
| 14 | 13 |  Julia Görges | 3,055 | 70 | 10 | 2,995 | First round lost to  Danielle Collins |
| 15 | 15 |  Ashleigh Barty | 2,985 | 130 | 430 | 3,285 | Quarterfinals lost to  Petra Kvitová [8] |
| 16 | 16 |  Serena Williams | 2,976 | 0 | 430 | 3,406 | Quarterfinals lost to  Karolína Plíšková [7] |
| 17 | 17 |  Madison Keys | 2,976 | 430 | 240 | 2,786 | Fourth round lost to  Elina Svitolina [6] |
| 18 | 18 |  Garbiñe Muguruza | 2,865 | 70 | 240 | 3,035 | Fourth round lost to  Karolína Plíšková [7] |
| 19 | 19 |  Caroline Garcia | 2,660 | 240 | 130 | 2,550 | Third round lost to  Danielle Collins |
| 20 | 20 |  Anett Kontaveit | 2,525 | 240 | 70 | 2,355 | Second round lost to  Aliaksandra Sasnovich |
| 21 | 21 |  Wang Qiang | 2,485 | 10 | 130 | 2,605 | Third round lost to  Anastasija Sevastova [13] |
| 22 | 22 |  Jeļena Ostapenko | 2,362 | 130 | 10 | 2,242 | First round lost to  Maria Sakkari |
| 23 | 23 |  Carla Suárez Navarro | 2,153 | 430 | 70 | 1,793 | Second round lost to  Dayana Yastremska |
| 24 | 24 |  Lesia Tsurenko | 1,896 | 70 | 70 | 1,896 | Second round lost to  Amanda Anisimova |
| 25 | 26 |  Mihaela Buzărnescu | 1,700 | 10 | 10 | 1,700 | First round lost to  Venus Williams |
| 26 | 25 |  Dominika Cibulková | 1,735 | 10 | 10 | 1,735 | First round lost to  Zhang Shuai |
| 27 | 28 |  Camila Giorgi | 1,645 | 70 | 130 | 1,705 | Third round lost to  Karolína Plíšková [7] |
| 28 | 27 |  Hsieh Su-wei | 1,680 | 240 | 130 | 1,570 | Third round lost to  Naomi Osaka [4] |
| 29 | 29 |  Donna Vekić | 1,580 | 70 | 70 | 1,580 | Second round lost to  Kimberly Birrell [WC] |
| 30 | 30 |  Maria Sharapova | 1,552 | 130 | 240 | 1,662 | Fourth round lost to  Ashleigh Barty [15] |
| 31 | 32 |  Petra Martić | 1,465 | 240 | 130 | 1,355 | Third round lost to  Sloane Stephens [5] |
| 32 | 34 |  Barbora Strýcová | 1,331 | 240 | 10 | 1,101 | First round lost to  Yulia Putintseva |